A boy carries a box across a bridge.
Someone is outdoors.
Just because the boy cross a bridge doesn't mean someone is outdoors.
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_carry(e1) & across(x2,x3) & n_bridge(x3) & n_box(x2) & n_boy(x1))
exists p1 x1.(exists x2.((x1 = x2) & n_outdoors(x2)) & n_person(x1))