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.

context: Four people are walking at identical speeds. The first walks around a mountain, the second walks around a house, the third walks around a book, and the fourth walks around a microwave.<sep>group: circumference <sep>question: Which takes the longest amount of time to walk around?<sep>A: mountain<sep>B: house<sep>C: book<sep>D: microwave
The mountain takes the longest amount of time to walk around.

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

context: A person is trying to move a pile of flowers, a pile of salt, a pile of books, and a pile of blocks 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: flowers<sep>B: salt<sep>C: books<sep>D: blocks

The pile of books is the hardest to move.