A man talking to a crowd at a meeting
a man is talking to a crowd
The phrase "a man is talking to a crowd" is a rephrasing of the first part of the sentence, "a man talking to a crowd at a meeting."
exists e1 x1 x2 x3 x4.(a_topic(x1) & at(e1,x4) & n_meeting(x4) & to(e1,x3) & n_crowd(x3) & Actor(e1,x2) & v_talk(e1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(to(e1,x2) & n_crowd(x2) & Actor(e1,x1) & v_talk(e1) & n_man(x1))