The task is about reading the given context, group and MCQs and then generating answers from the given input. MCQs are multiple choice questions in which a question is asked and few options are given, among which one or in some cases more than one can be the answer.

[EX Q]: context: A person is sliding four bricks across four hard surfaces. The first surface is covered with carpet, the second surface is covered with ice, the third surface is covered with soap, and the fourth surface is covered with grease.<sep>group: sliding <sep>question: Which brick slides the shortest distance?<sep>A: carpet<sep>B: ice<sep>C: soap<sep>D: grease
[EX A]: The surface covered with carpet is the hardest for the brick to slide across.

[EX Q]: context: Four balls are dropped. The first is dropped from the height equivalent of a house, the second is dropped from the height equivalent of a car, the third is dropped from the height equivalent of a table, and the fourth is dropped from the height equivalent of a mountain.<sep>group: height <sep>question: The ball dropped from the height of what takes the longest amount of time to fall?<sep>A: house<sep>B: car<sep>C: table<sep>D: mountain
[EX A]: The ball dropped from the height of the mountain takes the longest amount of time to fall.

[EX Q]: context: A person is trying to move a pile of rice, a pile of blocks, a pile of balls, and a pile of books from one side of a room to the other using only one hand.<sep>group: grasping <sep>question: Which pile is the hardest to move?<sep>A: rice<sep>B: blocks<sep>C: balls<sep>D: books
[EX A]:
The pile of books is the hardest to move.