Detailed Instructions: You are given a passage. You need to construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) its answer is the whole paragraph. Avoid creating questions that can be answered correctly without actually understanding the paragraph.
Problem:salt water will freeze, but at a much lower temperature than non salt water. the north polar ice pack is non salt water, and the saly wayer flows underneath it. submarines ofter pass under the pack while on patrol.
Solution:
How is it that water can freeze and salt water can't freeze? {Think of the north pole.}?