sentence: We see people unpacking a box. sentence:  The people put a bike on a rack. sentence:  We see the people putting the bike together. sentence:  The boy puts the handlebar on. sentence:  We see a man put on the back tire. sentence:  We see a man put on the seat. sentence:  We see them take the bike off the rack, put it back and then it's gone. sentence:  The camera spins as the person walks outside.