A young man sitting by a dumpster on a sidewalk playing the guitar.
A man is dancing around playing the saxaphone outside.
Sitting and dancing can't be done at the same time. A guitar and a saxophone are two totally different instruments.
exists e1 e2 s1 x1 x2 x3 x4 x5 x6.(n_guitar(x6) & a_topic(x1) & by(e1,x3) & on(x3,x4) & Theme(e2,x6) & Actor(e2,x5) & v_play(e2) & (x4 = x5) & n_sidewalk(x4) & n_dumpster(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_man(x1) & a_young(s1) & Theme(s1,x1))
exists e1 p1 s1 x1 x2 x3.(n_outside(x2) & of(x2,x3) & n_saxaphone(x3) & a_around(s1) & Manner(e1,s1) & exists e2.(Theme(e2,x2) & Actor(e2,x1) & v_play(e2)) & Topic(e1,p1) & Actor(e1,x1) & v_dance(e1) & n_man(x1))