TASK DEFINITION: This task is about identifying the object of a given sentence. The object of a sentence is the person or thing that receives the action of the verb. It is the who or what that the subject does something to. Each sentence in this task is guaranteed to contain a single object. The input is a sentence and the output is the identified object of that sentence.
PROBLEM: Polish Academy of Sciences is the publisher of Acta Palaeontologica Polonica.

SOLUTION: Polish Academy of Sciences

PROBLEM: "Breaking up is easy to do (part 1)" is 249th in the series.

SOLUTION: 249

PROBLEM: 11 Diagonal Street has 20 floors.

SOLUTION:
20