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 is it called when poles are in opposite positions? Answer: reversed polarity

SOLUTION: Reversed polarity is it called when poles are in opposite positions.

PROBLEM: Question: Which crust lies deep inside the ocean? Answer: oldest

SOLUTION: Oldest crust lies deep inside the ocean.

PROBLEM: Question: What is the year cycle that sunspots occur? Answer: 11

SOLUTION:
Sunspots occur in a 11 year cycle.