500
These are sentences you create ... 1) a sentence with a demonstrative pronoun at the beginning of the sentence, 2) an interrogative pronoun at the beginning of the sentence, and 3) an indefinite pronoun anywhere in the sentence.
What is 1) this, that, these, those, and 2) what, which, who, whom, whose, and 3) another, anyone, each, everybody, neither, both, few, many, all, etc.?