A man with a mustache and blue garment sitting on a sidewalk and playing a stringed instrument.
A man is outside playing an instrument
playing a stringed instrument can also be said as  playing an instrument
exists e2 e1 s1 s2 x1 x2 x3 x4 x5 x6 x7 x8.(a_topic(x1) & Theme(e2,x8) & Actor(e2,x7) & v_play(e2) & n_instrument(x8) & a_stringed(s2) & Theme(s2,x8) & (x1 = x7) & on(e1,x6) & n_sidewalk(x6) & Actor(e1,x5) & v_sit(e1) & (x1 = x5) & with(x1,x2) & n_garment(x4) & a_blue(s1) & Theme(s1,x4) & n_mustache(x3) & subset_of(x4,x2) & subset_of(x3,x2) & n_man(x1))
exists e1 s1 x1 x2.(for(s1,e1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_instrument(x2) & Theme(s1,x1) & a_outside(s1) & n_man(x1))