In this task, you're given a pair of sentences, sentence 1 and sentence 2, that neither agree with nor contradict each other. Your job is to alter sentence 2 so that the pair clearly contradict 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: A girl rides by on a bicycle while a boy watches her. Sentence 2: There is a girl riding a bike outdoors racing a boy
There is a girl riding a bike

Sentence 1: Man in a white shirt jumping toward a brick wall. Sentence 2: A man jumps toward a wall to catch the ball
A man jumping toward a wall

Sentence 1: A man wearing jeans and a backpack stands on the sidewalk. Sentence 2: A man stands on the sidewalk waiting for the light to change.

A man stands on the sidewalk.