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.

[Q]: Question: Which crust lies deep inside the ocean? Answer: oldest
[A]: Oldest crust lies deep inside the ocean.


[Q]: Question: How many forces do objects on earth have acting on them at all times? Answer: two
[A]: Objects on earth have two forces acting on them at all times.


[Q]: Question: A solenoid or coil wrapped around iron or certain other metals can form what kind of magnet? Answer: electromagnet
[A]:
A solenoid or coil wrapped around iron or certain other metals can form a(n) electromagnet.