instruction:
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 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.
question:
Sentence 1: a boy in a green shirt is pushing a shopping cart in which a boy in a yellow shirt is riding. Sentence 2: A boy is wearing tan shorts.
answer:
A boy is touching a shopping car.


question:
Sentence 1: A white dog and a black and white dog are running through the grass. Sentence 2: The two dogs are chasing each other.
answer:
There are two dogs running outside.


question:
Sentence 1: A black singer with short, spiked hair plays guitar and sings, while a bassist plays behind him. Sentence 2: The singer and bassist are over age twenty-five.
answer:

A singer plays guitar while a bassist plays.