Two kids, a boy and a girl, playing with a toy train set on the floor.
The children are building with Lego bricks.
A toy train is different from Lego bricks.
exists e2 e1 x1 x2 x3 x4 x5 x6 x7 x8 x9.(n_floor(x9) & a_topic(x1) & rel(x1,x2) & subset_of(x4,x2) & with(e1,x6) & on(e2,x9) & Theme(e2,x8) & v_set(e2) & (x6 = x8) & n_train(x6) & of(x6,x7) & n_toy(x7) & Actor(e1,x5) & v_play(e1) & (x4 = x5) & n_girl(x4) & subset_of(x3,x2) & n_boy(x3) & n_kid(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_child(x1) & with(e1,x2) & n_brick(x2) & (x2 = x3) & ne_org_lego(x3) & Actor(e1,x1) & v_build(e1))