A person holding a "Free Hugs" sign, hugs another person.
There is a person staring at a sign outdoors
A person staring at a sign would not be wearing a sign and hugging another person.
exists e1 p1 s1 s2 x1 x2 x3.(a_topic(x1) & exists e2 x4 x5.(Theme(e2,x5) & Actor(e2,x4) & v_hug(e2) & n_person(x5) & -(x5 = x1) & n_sign(x4)) & n_person(x1) & n_person(x1) & that(x1,p1) & Theme(e1,x3) & Actor(e1,x2) & v_hold(e1) & ne_nam_hugs(x3) & a_''(s2) & Theme(s2,x3) & a_free(s1) & Theme(s1,x3) & (x1 = x2))
exists p1 x1 e1 x2 x3 x4 x5.((x1 = x2) & at(e1,x4) & Time(x4,x5) & n_outdoors(x5) & n_sign(x4) & Actor(e1,x3) & v_stare(e1) & (x2 = x3) & n_person(x2))