In this task, you're given a pair of sentences, sentence 1 and sentence 2, that contradict each other. Your job is to alter sentence 2 so that the pair agree with each other. Generated sentences must be short, with less than 15 words. New information can be introduced. Avoid using pronouns to confuse the subject of the sentence.

Sentence 1: People riding on motorcycles in front of trees. Sentence 2: People riding trees.
Riding motorcycles in front of trees.

Sentence 1: A black man in a t-shirt and jeans is posing in front of a firehouse. Sentence 2: The man is inside the firehouse.
A man is posing next to a firehouse.

Sentence 1: A young female student studying in a classroom reading a book with her leg rested on another desk. Sentence 2: A boy is studying in the library.

A girl is in a classroom reading a book.