A man in a brown jacket is looking at art.
A woman in a brown jacket is looking at art.
A man cannot also be a woman.
exists e1 s1 x1 x2 x3.(at(e1,x3) & n_art(x3) & Actor(e1,x1) & v_look(e1) & in(x1,x2) & n_jacket(x2) & a_brown(s1) & Theme(s1,x2) & n_man(x1))
exists e1 s1 x1 x2 x3.(at(e1,x3) & n_art(x3) & Actor(e1,x1) & v_look(e1) & in(x1,x2) & n_jacket(x2) & a_brown(s1) & Theme(s1,x2) & n_woman(x1))