A man sits in front of his laptop.
A man sits in front of his Macbook Pro
Just because he is in front of his laptop doesn't make it a Macbook Pro.
exists e1 x1 x2 x3.(in(e1,x2) & of(x2,x3) & n_laptop(x3) & of(x3,x1) & n_male(x1) & n_front(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))
exists e1 x1 x2 x3 x4.(in(e1,x2) & of(x2,x3) & ne_org_pro(x3) & (x3 = x4) & ne_org_macbook(x4) & of(x3,x1) & n_male(x1) & n_front(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))