Sentence examples for a plural variable from inspiring English sources

A plural variable takes as its semantic value a plurality of entities, not a plural entity (such as a set or class).

(A plural version replaces the singular variable 'x' with a plural variable 'xx' (read "the xs").) This leads to a familiar problem when truthmakers are sought for necessary theories: any entity (or plurality of entities) is a truthmaker for any necessary theory on the analysis.

The difference is that in standard models we let plural variables range over the full power set of $D$, whereas plural variables range over a set $S$ of non-empty subsets of $D$, provided only that $S$ contains all sets definable by some formula.

If we adopt a language that allows the formation of plural terms we can unproblematically define a plural identity relation that holds between pluralities of objects too.

(That's a plural).

"Bafana is already a plural.

A compound subject like this is plural and should take a plural verb.

So the relative pronoun "that" is plural and requires a plural verb, "have lingered".

Do we really want a plural presidency?

Phenomena is a plural count noun —  not a mass noun.

This construction demands a plural verb in the relative clause.