Children are running near stationary bikes located next to a playground.
Children are walking to class from the playground.
Children cannot be running and walking at the same time.  Children cannot running to a playground and running from a playground simultaneously.
exists e2 e1 s1 x1 x2 x3 x4.(near(e1,x2) & to(e2,x4) & n_playground(x4) & r_next(e2) & Theme(e2,x3) & v_locate(e2) & (x2 = x3) & n_bike(x2) & a_stationary(s1) & Theme(s1,x2) & Actor(e1,x1) & v_run(e1) & n_child(x1))
exists e1 x1 x2 x3.(n_playground(x3) & from(e1,x3) & to(e1,x2) & n_class(x2) & Actor(e1,x1) & v_walk(e1) & n_child(x1))