Sentence ::= Subject Verb Object ''.''
Subject ::= ''I'' | ''a'' Noun | ''the'' Noun
Object ::= ''me'' | ''a'' Noun | ''the'' Noun | ε
Noun ::= ''cat'' | ''mat'' | ''rat''
Verb ::= ''like'' | ''is'' | ''see'' | ''sees'' | ''go''

FIRST(Sentence) = {I, a, the}
FIRST(Subject) = {I, a, the}
FIRST(Verb) = {like, is, see, sees, go}
FIRST(Object) = {me, a, the, ε}
FIRST(Noun) = {cat, mat, rat}

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[[NewCompileError]]