A man talking to a woman who is laughing.
a man is going fishing by himself
The man cannot be by himself and talking to a woman at the same time
exists e1 e2 x1 x2 x3 x4.(a_topic(x1) & to(e1,x3) & Actor(e2,x4) & v_laugh(e2) & (x3 = x4) & n_woman(x3) & Actor(e1,x2) & v_talk(e1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(by(e1,x1) & n_male(x1) & Theme(e1,x2) & Actor(e1,x1) & v_go(e1) & n_fishing(x2) & n_man(x1))