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 busy plaza with several people having conversations. Sentence 2: A plaza has a lot of people shopping.
A plaza is full of people talking.

Sentence 1: Four boys hold toy guns while under a pavillion. Sentence 2: The boys are playing cops and robbers.
The boys have toy guns.

Sentence 1: Two employees knead and prepare dough for use with making cakes as seen through the window. Sentence 2: Two employees kneading dough before a large baking competition.

Two employees kneading dough.