TASK DEFINITION: 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.
PROBLEM: Given Relationship: 'be key to', Sentence: 'As present processes are thought to explain all past events , the Uniformitarianism slogan is " the present is the key to the past . "'

SOLUTION: key

PROBLEM: Given Relationship: 'present at', Sentence: 'Paper presented at Annual Conflict Research Society Conference , University of Ulster Magee Campus , Northern Ireland , 1-3 September 2004 .'

SOLUTION: presented

PROBLEM: Given Relationship: 'require', Sentence: 'Map of Beeton requires Adobe Flash Player 7 or higher .'

SOLUTION:
requires