A group of people posing for a picture on the grass.
They are all friendly.
Posing for a picture implies that the people are friendly.
exists e1 x1 x2 x3 x4 x5.(n_grass(x5) & a_topic(x1) & of(x1,x2) & for(e1,x4) & on(x4,x5) & n_picture(x4) & Actor(e1,x3) & v_pose(e1) & (x2 = x3) & n_people(x2) & n_group(x1))
exists s1 s2 x1.(n_thing(x1) & a_all(s2) & Manner(s1,s2) & Theme(s1,x1) & a_friendly(s1))