A man performs stunts in front of a crowd on the sidewalk.
A man is performing stunts alone.
If the man is in front of a crowd, he is not performing alone.
exists e1 x1 x2 x3 x4 x5.(n_sidewalk(x5) & in(e1,x3) & of(x3,x4) & on(x4,x5) & n_crowd(x4) & n_front(x3) & Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_stunt(x2) & n_man(x1))
exists e1 s1 x1 x2.(a_alone(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_stunt(x2) & n_man(x1))