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 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.
question:
Sentence 1: A group of dark-haired girls are walking together. Sentence 2: a group of friends walk
answer:
a group of girls walks


question:
Sentence 1: A man cleans the windows of a tall building, suspended only by a rope. Sentence 2: A man cleans the windows of a tall building with a towel.
answer:
A man cleans the windows of a tall building.


question:
Sentence 1: One black dog with a toy and one yellow dog. Sentence 2: There are two dogs sharing one toy.
answer:

There are two dogs.