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: Mary was unsure if the spot on the couch was from the pen or marker, then she realized it couldn't be the _ because the cap was on.

SOLUTION: marker

PROBLEM: John do not want to leave the park and go home with his mother because the _ is interesting.

SOLUTION: park

PROBLEM: Rice will grow in sodden soil but corn will not because the _ is a very tough crop.

SOLUTION:
rice