Two people sit in front of tables in a room with blue walls.
The two people are walking outside.
If two people are walking, they are not sitting.
exists e1 s1 x1 x2 x3 x4 x5.(in(e1,x4) & with(x4,x5) & n_wall(x5) & a_blue(s1) & Theme(s1,x5) & n_room(x4) & in(e1,x2) & of(x2,x3) & n_table(x3) & n_front(x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & card_eq_2(x1))
exists e1 s1 x1.(n_people(x1) & card_eq_2(x1) & a_outside(s1) & Manner(e1,s1) & Actor(e1,x1) & v_walk(e1))