A lady pushes a stroller, behind a child, riding a tricycle, while another child walks along side.
A lady is pushing a stroller with a baby inside
The stroller does not necessarily have a baby inside, it could be empty or have something else in it.
exists e1 e2 p1 x1 x2 x3 x4.(for(e1,e2) & exists e3 x5 x6.(along(e3,x6) & n_side(x6) & Actor(e3,x5) & v_walk(e3) & n_child(x5) & -(x5 = x3)) & n_child(x3) & n_child(x3) & while(e2,p1) & Theme(e2,x4) & Actor(e2,x1) & v_ride(e2) & n_tricycle(x4) & behind(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_push(e1) & n_stroller(x2) & n_lady(x1))
exists e1 x1 x2 x3 x4.(with(e1,x3) & n_inside(x3) & of(x3,x4) & n_baby(x4) & Theme(e1,x2) & Actor(e1,x1) & v_push(e1) & n_stroller(x2) & n_lady(x1))