Teacher: 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.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Sentence 1: Jon saw his friend Tom coming out of the grocery store with a bag of fruit. Sentence 2: Tom had not been in the store.
Solution: Tom had been shopping for fruit to give Jon.
Reason: The given sentence is a good alteration. If the changed sentence was something like: "Tom had been sleeping in his house in that time", it'd contradict the first sentence. But this given sentence neither agrees with the first sentence, nor contradicts it.

Now, solve this instance: Sentence 1: With a boardwalk railing in the background, a man wearing jeans and a tan t-shirt leaps headfirst onto a pile of mattresses covered with sheets. Sentence 2: the man slept on the ground well in the tent
Student:
the man is buying a new matress