{"id":"GRM-004","name":"Pronoun–antecedent agreement","domain":"grammar","layer":"sentence","strength":"hard_constraint","human_logic":"IF a pronoun refers to an antecedent AND the antecedent is known, THEN align person and number while respecting singular THEY ELSE request the missing referent.","when":{"all":[{"path":"pronoun","operator":"exists"},{"path":"pronoun.antecedent","operator":"exists"}]},"then":[{"action":"align","target":"pronoun.person","value_from":"pronoun.antecedent.person"},{"action":"align","target":"pronoun.number","value_from":"pronoun.antecedent.number","allow":["singular_they"]}],"else":[{"action":"request_context","target":"pronoun.antecedent"}],"unless":[],"because":"Agreement and a stable referent prevent identity confusion.","diagnostics":[],"examples":{},"source_ids":["BK-003","BK-007","BK-010","WEB-011"],"laka":{"smallest_sufficient_intervention":true,"primary_axes":["scope","depth","magnitude","reversibility"]},"requires_facts":["pronoun","pronoun.antecedent"],"tests":[],"sources":[{"id":"BK-003","title":"Garner's Modern English Usage","creator":"Bryan A. Garner","domain":"usage_reference","type":"Book","note":"Modern American usage and editorial judgment.","url":null},{"id":"BK-007","title":"The Copyeditor's Handbook","creator":"Amy Einsohn; Marilyn Schwartz","domain":"copyediting","type":"Book","note":"Professional copyediting practice, grammar, and editorial process.","url":null},{"id":"BK-010","title":"Practical English Usage","creator":"Michael Swan","domain":"usage_reference","type":"Book","note":"Advanced grammar and usage reference for learners and teachers.","url":null},{"id":"WEB-011","title":"Grammar, Punctuation, and Sentence Structure","creator":"Purdue Online Writing Lab","domain":"grammar_reference","type":"University writing resource","note":"Practical mechanics, clause, sentence, punctuation, and style guidance.","url":"https://owl.purdue.edu/owl/general_writing/index.html"}],"defined_in":{"file":"07-core-grammar-rules.json","title":"Core Grammar Rules","slug":"core-grammar-rules"}}