A man performing for a crowd.
A man performing alone by himself.
If a man is performing alone, he could not be performing for a crowd.
exists e1 x1 x2 x3.(a_topic(x1) & for(e1,x3) & n_crowd(x3) & Actor(e1,x2) & v_perform(e1) & (x1 = x2) & n_man(x1))
exists e1 s1 x1 x2.(a_topic(x1) & by(e1,x1) & n_male(x1) & a_alone(s1) & Manner(e1,s1) & Actor(e1,x2) & v_perform(e1) & (x1 = x2) & n_man(x1))