Does the sentence Whenever Patterns visit Florida they see their relatives have a vague pronoun?

Yes, the sentence "Whenever Patterns visit Florida they see their relatives" has a vague pronoun.

Here's why:

* "They" is the pronoun. It's unclear who "they" refers to. Is it the Patterns or someone else?

* "Their" is the possessive pronoun. It also has the same ambiguity. Whose relatives are being seen?

To make the sentence clearer, you could rephrase it:

* "Whenever the Patterns visit Florida, they see their relatives." This clarifies that "they" refers to the Patterns.

* "Whenever the Patterns visit Florida, they see the relatives of [insert name/group]." This clarifies who the relatives belong to.

Let me know if you have any other sentences you'd like to check for vague pronouns!