This task is about identifying the subject of a given sentence. The subject of a sentence is the person, place, or thing that is performing the action of the sentence. The subject represents what or whom the sentence is about. Each sentence in this task is guaranteed to contain a single subject. The input is a sentence and the output is the identified subject of that sentence.

Houston Astros seasonheld on September 2 2007 at number 137.
137

Images of Liberation, a 1982 film, received a 5.1 on IMDb.
Images of Liberation

AIP Advances has the impact factor 1.524,.

AIP Advances