A group of people stare at a building.
A group of people are waiting for the building to open.
People staring at the building does not imply they are waiting for it to open.
exists e1 x1 x2 x3.(at(e1,x3) & n_building(x3) & Actor(e1,x1) & v_stare(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 p1 x1 x2 x3.(n_building(x3) & Topic(e1,p1) & Actor(e1,x1) & v_wait(e1) & exists e2.(Actor(e2,x3) & v_open(e2)) & of(x1,x2) & n_people(x2) & n_group(x1))