core/docs/curriculum/relations_chains_v1.md

Curriculum Unit — relations_chains_v1 (Kinship Seed)

Date: 2026-05-18 Author: Shay Corpus ID: relations_chains_v1 Pack binding: en_core_relations_v1 (1:1, pack-internal only) Chain count: 7 Status: Ratified — initial reviewed seed for the kinship domain.

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Why this unit

The en_core_relations_v1 kinship pack was mounted by default in ADR-0063, but the live teaching-grounded path had no reviewed chains for any kinship lemma. Every cold-start CAUSE/VERIFICATION on a kinship prompt fell through to the universal disclosure even though the lemmas were known.

ADR-0064 closed that gap architecturally (cross-pack teaching corpora registered, surface composers consult the aggregated index). This unit closes it operationally — seven hand-authored chains that exercise every formation gate end-to-end against a fresh corpus.

Per teaching_order.md §5 — "Pick one commercial domain and run the full 1→4 progression inside that domain before opening a second domain. Cross-domain triples come last and only after both domains have ratified their own internal DAG." Every chain in v1 is therefore strictly pack-internal to en_core_relations_v1. Cross-domain triples (e.g. family grounds identity with identity from cognition) are deliberately deferred.

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The seven chains

Chain ID	Subject	Intent	Connective	Object
cause_parent_precedes_child	parent	cause	precedes	child
cause_child_follows_parent	child	cause	follows	parent
cause_ancestor_precedes_descendant	ancestor	cause	precedes	descendant
cause_descendant_follows_ancestor	descendant	cause	follows	ancestor
cause_family_grounds_parent	family	cause	grounds	parent
verification_child_requires_parent	child	verification	requires	parent
verification_descendant_requires_ancestor	descendant	verification	requires	ancestor

Pack-residency: every subject ∈ en_core_relations_v1, every object ∈ en_core_relations_v1. Zero cognition-pack atoms.

Predicate residency: every connective (precedes, follows, grounds, requires) already exists in generate.semantic_templates._PREDICATE_HUMANIZE. No new predicates introduced in this seed.

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Coverage

Five of the eight ratified relations lemmas (parent, child, ancestor, descendant, family) receive at least one chain. Three lemmas (sibling, spouse, offspring) are intentionally deferred to a future curriculum unit — they need lateral / affinal / descendant-direct chains that compose more naturally once the v1 ancestor-descendant axis is in place.

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Live verification

$ core chat
> Why does parent exist?
parent — teaching-grounded (relations_chains_v1):
kinship.ascendant.direct; kinship.parent. parent precedes child
(kinship.descendant.direct). No session evidence yet.
grounding_source = teaching

> Does child require parent?
child — teaching-grounded (relations_chains_v1):
kinship.descendant.direct; kinship.child. child requires parent
(kinship.ascendant.direct). No session evidence yet.
grounding_source = teaching

Every kinship CAUSE/VERIFICATION prompt covered by the seed now emits a deterministic teaching-grounded surface tagged with the resolving corpus id (relations_chains_v1), not the cognition tag.

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Provenance

Every line carries:

"provenance": "adr-0064:reviewed:2026-05-18:relations_seed_v1"

This is the direct-append seed pattern — the same shape used when the cognition corpus was originally seeded pre-ADR-0055 (provenance adr-0052:reviewed:..., adr-0053:reviewed:...). The propose/replay/accept pipeline is for additions once a corpus has chains to baseline against; for an empty-corpus seed, the replay gate has no baseline and direct append is the correct surface.

Future chains added to relations_chains_v1 must go through the propose/replay/accept pipeline. The seed is the only direct-write.

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Eval impact

The cognition lane is byte-identical — cognition lemmas resolve to the cognition corpus first and the orthogonal-pack invariant prevents any (subject, intent) collision. Public/holdout splits remain at:

public:  intent 100% / surface 100% / term 91.7% / closure 100%
holdout: intent 100% / surface 100% / term 83.3% / closure 100%

Relations-domain coverage opens on the live path but is not yet measured by a dedicated eval lane. A relations lane is the natural follow-up.

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Path forward

1. relations eval lane. Mirror the cognition lane harness with relations-domain prompts. Use the seven chains as ground truth.
2. sibling/spouse/offspring chains — extend the seed to cover the remaining ratified lemmas.
3. Pronoun + role-filler v2 — mother/father/son/daughter chains as specializations of v1's primitives.
4. Cross-domain triples — only after the relations corpus is internally saturated. Then family grounds identity, parent informs experience, etc.

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Cross-References

• ADR-0064 — the architectural unlock that made this seed possible.
• Pack: en_core_relations_v1 — the lexicon this corpus is bound to.
• teaching_order.md §5 — the prerequisite-topological doctrine.
• Cognition saturation v2 — the sibling cognition curriculum unit.