In this task, you're given a pair of sentences, sentence 1 and sentence 2, that agree with each other. Your job is to alter sentence 2 so that the pair 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: Various people sitting and talking in a room. Sentence 2: there are variety of people giving presentation and doing discussions
A girl catching a bus in the city.

Sentence 1: A man in a cap teaches children proper bike maintenance. Sentence 2: A man is teaching some children.
A lady is watching a movie.

Sentence 1: A man in a yellow vest is smoking and working in a field. Sentence 2: The man is multitasking.

A woman in a yellow vest is smoking in a field.