A man plays an instrument next to a drummer.
The man knows how to play the instrument.
Both sentences describe a man who can play an instrument.
exists e1 x1 x2 x3.(to(e1,x3) & n_drummer(x3) & r_next(e1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_instrument(x2) & n_man(x1))
exists e1 x1 x2 x4.(n_instrument(x4) & n_man(x1) & Topic(e1,x2) & Actor(e1,x1) & v_know(e1) & n_manner(x2) & exists e2 x3.(Theme(e2,x4) & Actor(e2,x3) & v_play(e2)))