a group of children are standing outside a building.
The group of kids are waiting for the bus.
A group standing outside a building are not assumed to be waiting for the bus.
exists e1 x1 x2 x3.(outside(e1,x3) & n_building(x3) & Actor(e1,x1) & v_stand(e1) & of(x1,x2) & n_child(x2) & n_group(x1))
exists e1 x1 x2 x3.(n_bus(x3) & n_group(x1) & for(e1,x3) & Actor(e1,x1) & v_wait(e1) & of(x1,x2) & n_kid(x2))