Three friends on a stroll in the forest.
Friends with jolly walk
Friends on a forest stroll are not necessarily jolly.
exists x1 x2 x3.(n_forest(x3) & a_topic(x1) & on(x1,x2) & in(x2,x3) & n_stroll(x2) & n_friend(x1) & card_eq_3(x1))
exists s1 x1 x2.(a_topic(x1) & with(x1,x2) & n_walk(x2) & a_jolly(s1) & Theme(s1,x2) & n_friend(x1))