There are two children dressed as pirates standing on a white couch, in front of a window.
Two pirate children standing on a sofa.
sentence 2 follows sentence 1 because sentence 1 just has more information about what's going on. The similar information is two children are dressed as pirates and standing on a couch
exists p1 x1 e2 e1 s1 x2 x3 x4 x5 x6 x7 x8.((x1 = x2) & as(e1,x4) & in(e2,x7) & of(x7,x8) & n_window(x8) & n_front(x7) & on(e2,x6) & n_couch(x6) & a_white(s1) & Theme(s1,x6) & Actor(e2,x5) & v_stand(e2) & (x4 = x5) & n_pirate(x4) & Theme(e1,x3) & v_dress(e1) & (x2 = x3) & n_child(x2) & card_eq_2(x2))
exists e1 s1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_sofa(x3) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_child(x1) & a_pirate(s1) & Theme(s1,x1) & card_eq_2(x1))