Girl in hallway vacuuming
A machine is nearby.
People don't necessarily need a machine in order to vacuum.
exists e1 s1 x1 x2.(ne_nam_girl(s1) & a_topic(s1) & in(s1,x1) & Actor(e1,x2) & v_vacuum(e1) & (x1 = x2) & n_hallway(x1))
exists s1 x1.(Theme(s1,x1) & a_nearby(s1) & n_machine(x1))