In this task, you're given a pair of sentences, sentence 1 and sentence 2. Sentence 2 contradicts sentence 1. Your job is to alter sentence 2 so that the pair neither agree nor 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: The girl is playing while four boys look on. Sentence 2: The children are singing a song together.
The girl is playing by herself with a toy.

Sentence 1: A pilot wearing a light blue shirt, dark pants and tie is standing in front of a plane, smiling. Sentence 2: The pilot is frowning in front of the plane.
The pilot smiling is female.

Sentence 1: A black dog with a red collar is walking through water. Sentence 2: A cat is retrieving a stick in water

A black dog is playing fetch with his owner, who through a ball in water