A girl is holding a green sign that says, "invisible children no child should be a shoulder."
The girl is standing in front of the white house.
It is not mandatory to stand in front of white house to hold a sign
exists e1 e2 p1 s1 x1 x2 x3.(Theme(e2,x2) & Actor(e2,x1) & v_hold(e2) & exists e3 p2 s2 x4 x5.(exists p3 x6.((x4 = x6) & n_shoulder(x6)) & Topic(e3,p2) & Actor(e3,x4) & v_should(e3) & n_child(x5) & rel(x4,x5) & n_child(x4) & a_invisible(s2) & Theme(s2,x4)) & Topic(e1,p1) & Actor(e1,x3) & v_say(e1) & (x2 = x3) & n_sign(x2) & a_green(s1) & Theme(s1,x2) & n_girl(x1))
exists e1 s1 x1 x2 x3.(n_house(x3) & a_white(s1) & Theme(s1,x3) & n_girl(x1) & in(e1,x2) & of(x2,x3) & n_front(x2) & Actor(e1,x1) & v_stand(e1))