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: 'convert to', Sentence: 'After it converts ATP to ADP , the level of the latter accumulates outside the cell and the purine can bind to a purine receptor called P2Y1 .'
converts

Given Relationship: 'stand for', Sentence: 'MMA stands for Mixed Martial Arts and it is a system in which all types of fighting styles are used to see , which one is best .'
stands

Given Relationship: 'release', Sentence: 'On 29th October Oasis release a brand new DVD film .'

release