instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
The location of an object in a frame of reference is called position.
answer:
The location of an object in a frame of reference is called what?


question:
Gastro-esophageal sphincter sphincter is located at the stomach end of the esophagus and opens to allow the bolus to enter the stomach.
answer:
Which sphincter is located at the stomach end of the esophagus and opens to allow the bolus to enter the stomach?


question:
Mechanical form of energy is being used when a person pushes a wooden block across the floor.
answer:

What form of energy is being used when a person pushes a wooden block across the floor?