A musician with long hair performs on a stringed instrument.
A man is playing the guitar.
There are other stringed instruments besides a guitar.
exists e1 s1 s2 x1 x2 x3.(on(e1,x3) & n_instrument(x3) & a_stringed(s2) & Theme(s2,x3) & Actor(e1,x1) & v_perform(e1) & with(x1,x2) & n_hair(x2) & a_long(s1) & Theme(s1,x2) & n_musician(x1))
exists e1 x1 x2.(n_guitar(x2) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_man(x1))