A uniformed man in a blue security vest is smiling.
A security guard is smiling.
A blue security vest doesn't dictate a security guard.
exists e1 s1 s2 x1 x2 x3.(Actor(e1,x1) & v_smile(e1) & in(x1,x2) & n_vest(x2) & of(x2,x3) & n_security(x3) & a_blue(s2) & Theme(s2,x2) & n_man(x1) & a_uniformed(s1) & Theme(s1,x1))
exists e1 x1 x2.(Actor(e1,x1) & v_smile(e1) & n_guard(x1) & of(x1,x2) & n_security(x2))