GAI of a lexical item refers to the determination of the extension of the subject or predicate of an outspoken proposition. In the outspoken proposition, if we sum up all the extensions of the subject or predicate, we say that the subject or predicate belongs to GAI；; On the contrary, it is not GAI. ?

GAI of lexical items is determined by conjunctions and quantitative items of outspoken propositions. Specifically, the GAI of the main term is determined by the quantity term. If the quantity item is full name and the main item is main, if the quantity item is special, the main item is not GAI. GAI of predicate is determined by conjunctions. If the conjunction is negative, the predicate is GAI；; If the conjunction is affirmative, the predicate is not GAI.

General judgment rule:

1, the full name of the theme is GAI.

2. The special term is not GAI.

3. Be sure that the predicate is not GAI.

4. The negative predicate is GAI.