Complex sentence: As Power pitted, the lead passed on to Penske teammate Hélio Castroneves until the lead was taken Josef Newgarden during the second full course caution of the race when debris from Stefano Coletti's contact with the out wall left debris in turn 8.
Split into simpler sentences: As Power pitted, the lead passed on to Penske teammate Hélio Castroneves. Castroneves held the lead until the second full course caution, when debris from Stefano Coletti's car was left on circuit at Turn 8.