People are walking, sitting, and standing outside of a department store.
There are people singing in the parking lot of the store.
One can not be singing and walking, sitting and standing simultaneously.
exists e2 e3 e1 x1 x2 x3 x4 x5.(of(e3,x4) & n_store(x4) & of(x4,x5) & n_department(x5) & r_outside(e3) & Actor(e3,x3) & v_stand(e3) & n_people(x3) & Actor(e2,x2) & v_sit(e2) & n_people(x2) & Actor(e1,x1) & v_walk(e1) & n_people(x1))
exists p1 x1 x4 x5 x6.(n_store(x6) & n_lot(x4) & of(x4,x5) & n_parking(x5) & exists e1 x2 x3.((x1 = x2) & in(e1,x4) & of(x4,x6) & Actor(e1,x3) & v_sing(e1) & (x2 = x3) & n_people(x2)))