People walk around and laugh outside.
A group of friends are in the park laughing and walking while telling jokes
Just because the people walk around and laugh does not imply that they are friends.
exists e1 s1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_outside(x2) & of(x2,x3) & n_laugh(x3) & a_around(s1) & Theme(s1,x2) & n_people(x1))
exists e1 p1 x1 x2 x3 x4 x5 x6 x7.(n_walking(x6) & n_laughing(x5) & of(x5,x7) & n_park(x7) & subset_of(x6,x4) & subset_of(x5,x4) & while(p1,e1) & Theme(e1,x3) & Actor(e1,x1) & v_tell(e1) & n_joke(x3) & in(x1,x4) & of(x1,x2) & n_friend(x2) & n_group(x1))