A motorcyclist performing amazing tricks in front of a crowd of thousands.
He is watching a motorcyclist.
A crowd means more than just "He" meaning a single person.
exists e1 s1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & in(e1,x4) & of(x4,x5) & of(x5,x6) & n_thousand(x6) & n_crowd(x5) & n_front(x4) & Theme(e1,x3) & Actor(e1,x2) & v_perform(e1) & n_trick(x3) & a_amazing(s1) & Theme(s1,x3) & (x1 = x2) & n_motorcyclist(x1))
exists e1 x1 x2.(n_male(x1) & Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_motorcyclist(x2))