You will be given a definition of a task first, then some input of the task.
In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

Question: Herbivores are heterotrophs that eat only or mainly what? Answer: plants
Output:
Herbivores are heterotrophs that eat only or mainly plants.