What the pronoun in this sentence?

Supposedly, a young boy and girl with bright green skin had been found wandering in the fields.

Supposedly, a young boy (A) and girl (A) with bright green skin had been found wandering in the fields. They (P) spoke a foreign language and wore clothing made of unknown material.

Hope you understand my markings. If this were Who Wants to be a Millionaire, and you had phoned a friend, I would say 100% sure.