Three men playing music outside.
A woman is playing piano alone at home.
Three men is definitely not a woman.
exists e1 s1 x1 x2 x3.(a_topic(x1) & a_outside(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_music(x3) & (x1 = x2) & n_man(x1) & card_eq_3(x1))
exists e1 x1 x2 x3.(at(e1,x3) & n_home(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & r_alone(x2) & n_piano(x2) & n_woman(x1))