TASK DEFINITION: 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.
PROBLEM: Question: Fruit fly and brine shrimp hox genes have evolved independently for how long? Answer: 400 million years

SOLUTION: Fruit fly and brine shrimp hox genes have evolved independently for 400 million years long.

PROBLEM: Question: What are the sporophytes in ferns? Answer: leafy plants

SOLUTION: Leafy plants are the sporophytes in ferns.

PROBLEM: Question: Because of their reactivity, we do not find most representative metals as free elements where? Answer: in nature

SOLUTION:
Because of their reactivity, we do not find most representative metals as free elements in nature.