A man in a hat sits on a sofa with an infant.
The infant is the man's child.
Just because the man is holding the infant does not make the infant that man's child.
exists e1 x1 x2 x3 x4.(with(e1,x4) & n_infant(x4) & on(e1,x3) & n_sofa(x3) & Actor(e1,x1) & v_sit(e1) & in(x1,x2) & n_hat(x2) & n_man(x1))
exists p1 x1 x2 x3.(n_child(x3) & of(x3,x2) & n_man(x2) & n_infant(x1) & (x1 = x3))