A sweaty man plays guitar.
The is playing his guitar in the summer heat.
The is not a man. Just because the man is sweaty is doesn't mean its due to the summer heat.
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_guitar(x3) & n_man(x1) & of(x1,x2) & n_sweaty(x2))
(x)