sentence: I think cutting down the trees which are around the circuit and undercutting kerbs could reduce danger and technical problems on the track and we should reduce the long straights .
modified: I think cutting trees which around the circuit and undercutting kerbs can be reduce danger and technical problem on the track and we have to reduce long straights .
transformation: OTHER, VERB, VERB:TENSE, VERB, NOUN:NUM, VERB, DET