In this task, you are given a sentence with a missing word that can be an object, a person, and/or an action. Fill in the blank with a plausible word. Although each sentence has many correct answers, you only have to write one answer.

Example Input: PersonX prevents the ___ from spreading
Example Output: gasoline

Example Input: PersonX gives ___ a reward
Example Output: hero

Example Input: PersonX knows the ___ by heart
Example Output:
play