A boy with a guitar crossing the street.
The boy has his guitar in a case.
You cannot infer the guitar is in a case
exists e1 x1 x2 x3 x4.(n_street(x4) & a_topic(x1) & with(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_cross(e1) & (x2 = x3) & n_guitar(x2) & n_boy(x1))
exists e1 x1 x2 x3.(n_guitar(x2) & of(x2,x1) & n_male(x1) & n_boy(x1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & in(x2,x3) & n_case(x3))