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: 'present at', Sentence: 'Malfait N. , Ramsay J.O. and Froda , S. , Estimation by the finite element method in a functional linear model , Paper presented at the International Conference on Measurement and Multivariate Analysis , Banff , May 2000 .'
presented

Given Relationship: 'start in', Sentence: 'The basic video driver is always used when you start Windows 2000 in Safe Mode .'
start

Given Relationship: 'lead', Sentence: 'Democrat Barack Obama leads Republican John McCain 48 points to 40 points among registered Ohio voters and 49 to 45 among likely Ohio voters , according to The Marist Poll released Monday , Oct. 13 .'
leads