Grammatical agreement is a linguistic phenomenon in which the form of one element in a sentence is determined or constrained by the grammatical features of another element ^[1][2]. These features commonly include person, number, gender, and grammatical class, and agreement may be expressed through inflectional morphology or other formal markers on verbs, adjectives, pronouns, determiners, and nouns ^[1][2]. The distribution and realization of agreement vary across languages, with different grammatical systems specifying which elements participate in agreement and which features are shared.