Read the text and determine if the sentence is true (see options at the end):

Father and Son<br>Thomas's son, Gregory, loves to paint his nails. Thomas wants Gregory to feel comfortable being himself. So Thomas took his son to the nail salon. He let Gregory pick a color for him. They got their nails done together.

Sentence: Thomas is Gregory's father.
Options are: +Yes. +It's impossible to say. +No.
Yes