What is the classification of the capitalized pronoun can you describe anything about an arachnid?

In the example sentence the pronouns are you and anything.

The pronoun 'you' is the second person, personal pronoun; a Word that takes the place of the noun (name) for the person or persons spoken to. The pronoun 'you' in the example sentence may be singular or plural, the person asking the question may be speaking to one person or a group of people. The pronoun 'you' is functioning as the subject of the sentence (you can name...).

The pronoun 'anything' is an indefinite pronoun; a Word that takes the place of an unnamed or unknown thing or amount. The pronoun 'anything' is functioning as the direct object of the verb 'describe'.