A security guard stands by a metal, lighted sculpture.
A gaurd is gaurding a sculpture because someone is trying to steal it.
You can't imply anywhere that someone is trying to steal the sculpture just from standing next to it.
exists e1 e2 x1 x2 x3 x4.(by(e1,x3) & rel(x3,x4) & n_sculpture(x4) & Theme(e2,x4) & v_light(e2) & n_metal(x3) & Actor(e1,x1) & v_stand(e1) & n_guard(x1) & of(x1,x2) & n_security(x2))
exists e1 p1 x1 x2.(exists e2 p2 x3.(Topic(e2,p2) & Actor(e2,x3) & v_try(e2) & exists e3.(Theme(e3,x1) & Actor(e3,x3) & v_steal(e3)) & n_person(x3)) & n_thing(x1) & because(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_gaurd(e1) & n_sculpture(x2) & n_gaurd(x1))