instruction:
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.
question:
Nina Hagen acted in the 1979 film Cha-Cha.
answer:
Cha-Cha


question:
Marriott International is the tenant of AC Hotel Bella Sky Copenhagen.
answer:
AC Hotel Bella Sky Copenhagen


question:
The episode titled "the killing (part two)" originally aired on 9 november 1966.
answer:

the killing (part two)