The man sits on a sofa under the bridge and litter is all around him.
There is a man sitting on a sofa under a bridge because he is homeless.
The man does not have to be homeless to sit on a sofa under a bridge.
exists e1 p1 x1 x2 x3 x4.(n_male(x3) & n_bridge(x3) & n_man(x1) & r_all(x4) & around(x4,x3) & n_litter(x4) & under(e1,x3) & on(e1,x2) & n_sofa(x2) & Actor(e1,x1) & v_sit(e1))
exists p1 x1 e1 p2 x2 x3 x4 x5.((x1 = x2) & exists s1.(Theme(s1,x2) & a_homeless(s1)) & n_male(x2) & because(e1,p2) & under(e1,x5) & n_bridge(x5) & on(e1,x4) & n_sofa(x4) & Actor(e1,x3) & v_sit(e1) & (x2 = x3) & n_man(x2))