A man and a woman, each on a bicycle, talk in front of a building.
A man and a woman push a baby in a stroller.
A person cannot push a baby in a stroller while they are on a bicycle.
exists s1 x1 x2.(a_topic(s1) & subset_of(x2,s1) & all x3.(n_thing(x3) -> exists x4 x5 x6 x7.(rel(x2,x3) & on(x3,x4) & rel(x4,x5) & in(x5,x6) & of(x6,x7) & n_building(x7) & n_front(x6) & n_talk(x5) & n_bicycle(x4))) & n_woman(x2) & subset_of(x1,s1) & n_man(x1))
exists e1 x1 x2 x3 x4 x5.(in(e1,x5) & n_stroller(x5) & Theme(e1,x4) & Actor(e1,x1) & v_push(e1) & n_baby(x4) & subset_of(x3,x1) & n_woman(x3) & subset_of(x2,x1) & n_man(x2))