a woman plays guitar in the street.
The woman knows how to play guitar.
A woman playing guitar doesn't indicate that she knows how to.
exists e1 x1 x2 x3.(n_street(x3) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & n_woman(x1))
exists e1 x1 x2.(n_woman(x1) & Topic(e1,x2) & Actor(e1,x1) & v_know(e1) & n_manner(x2) & exists e2 x3 x4.(Theme(e2,x4) & Actor(e2,x3) & v_play(e2) & n_guitar(x4)))