You will be given a definition of a task first, then some input of the task.
From the given sentence, extract the phrase (often noun or verb) that carries the given relationship. The generated phrase should be present in the sentence.

Given Relationship: 'be kill by', Sentence: 'Israeli children have been killed by Palestinians and 1,487 Palestinian children have been killed by Israelis since September 29 , 2000 .'
Output:
killed