A man in a green parks looks over his shoulder at a policeman who is helping an injured bicyclist lying in the street.
man looks at policeman
A man  looks over his shoulder at a policeman implies he looks at policeman.
exists e3 e2 e1 s1 s2 x1 x2 x3 x4 x5 x6 x7.(n_street(x6) & over(e1,x7) & n_shoulder(x7) & of(x7,x1) & n_male(x1) & at(e1,x3) & for(e2,e3) & in(e3,x6) & Actor(e3,x4) & v_lie(e3) & Theme(e2,x5) & Actor(e2,x4) & v_help(e2) & n_bicyclist(x5) & a_injured(s2) & Theme(s2,x5) & (x3 = x4) & n_policeman(x3) & Actor(e1,x1) & v_look(e1) & in(x1,x2) & n_park(x2) & a_green(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2.(at(e1,x2) & n_policeman(x2) & Actor(e1,x1) & v_look(e1) & n_man(x1))