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 write in', Sentence: 'Azureus is written in Java and therefore can be run on practically all platforms , while KTorrent is written in C/C++ using Trolltech 's Qt toolkit , and can be run only on Linux and Unix-like systems .'
Output:
written