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: What season causes people to look forward to spring? Answer: winter

SOLUTION: Winter season causes people to look forward to spring.

PROBLEM: Question: What do scientists think are the oldest eukaryotes? Answer: protists

SOLUTION: Scientists think protists are the oldest eukaryotes.

PROBLEM: Question: Which of the following structures does a frog develop as it changes from a tadpole to an adult frog? Answer: lungs

SOLUTION:
A frog develops (a/an) lungs as it changes from a tadpole to an adult frog.