TASK DEFINITION: You need to answer a given question containing a blank (_). Your answer must be one of the two objects mentioned in the question, for example "trophy" and "suitcase". Your answer must not contain a word that is not present in the question. Please don't use articles (e.g., the, a) before the answer.
PROBLEM: At the house, the tenant chose to use stones instead of bricks in the garden. The _ are ugly.

SOLUTION: bricks

PROBLEM: Lonnie put mortar between the bricks with a spatula instead of a trowel, because the _ was inefficient.

SOLUTION: trowel

PROBLEM: Jennifer wanted to plant a tree in the yard, she couldn't decided between lemon or plum. The _ are to sour.

SOLUTION:
lemon