Teacher: Given a sentence, generate a new sentence by performing small changes on the sentence. Here, make sure that the changes are semantically related and syntactically similar to the input. And the generated sentence should have high commonsense plausibility, that is to have reasonable probability of it being true.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Stimulating the mind helps the brain to grow essential neural cells .
Solution: Stimulating the learning helps the brain to grow new neural cells .
Reason: This is a good example of a change in the input. The created sentence is semantically similar to the input as both are talking about growing essential neural cells and the changes in the sentence follows the commonsense knowledge.

Now, solve this instance: Spaceships are used to travel between planets , moons , or satellites in combat .
Student:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Spaceships are used to travel between planets, moons, or satellites in space.