A man sits perched on a course rock wearing a white tank top.
man waits for bus
Just because the man is sitting perched on a course rock doesn't mean that he is waiting for a bus.
exists e1 p1 x1.(exists e2 e3 s1 x2 x3 x4 x5.(for(e2,e3) & Theme(e3,x4) & Actor(e3,x1) & v_wear(e3) & n_top(x4) & of(x4,x5) & n_tank(x5) & a_white(s1) & Theme(s1,x4) & Time(e2,x3) & n_rock(x3) & on(e2,x2) & n_course(x2) & Theme(e2,x1) & v_perch(e2)) & Topic(e1,p1) & Actor(e1,x1) & v_sit(e1) & n_man(x1))
exists x1 x2 x3.(a_topic(x1) & for(x1,x3) & n_bus(x3) & n_wait(x1) & of(x1,x2) & n_man(x2))