A woman sings at a club while a man plays the drums.
A woman is singing.
Singing is a form of sings.
exists e1 p1 x1 x2 x4.(n_drum(x4) & exists e2 x3.(Theme(e2,x4) & Actor(e2,x3) & v_play(e2) & n_man(x3)) & while(e1,p1) & at(e1,x2) & n_club(x2) & Actor(e1,x1) & v_sing(e1) & n_woman(x1))
exists e1 x1.(Actor(e1,x1) & v_sing(e1) & n_woman(x1))