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.

Input: Consider Input: Mary brought a ball to the field to play soccer, but she couldn't because the _ was flat.

Output: ball


Input: Consider Input: While the man modified the height of the bike, the boy rode the tricycle, because the _ was the incorrect height.

Output: bike


Input: Consider Input: The barrel made its journey from the lake to the river, as the current went away from the _ .


Output: lake