A young man in a black t-shirt with a green hat standing.
A person standing.
A person is implied by a young man. A young man is a person.
exists s1 s2 s3 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & with(x2,x3) & n_standing(x3) & of(x3,x4) & n_hat(x4) & a_green(s3) & Theme(s3,x3) & n_t-shirt(x2) & a_black(s2) & Theme(s2,x2) & n_man(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2.(a_topic(x1) & Actor(e1,x2) & v_standing(e1) & (x1 = x2) & n_person(x1))