Group sitting on a grassy hill resting.
A group of people are sitting on a grassy hill and resting while they have a picnic lunch.
Just because a group is sitting on a grassy hill it does not mean they are resting.
exists e1 e2 s1 s2 x1 x2 x3.(ne_org_group(s1) & a_topic(s1) & on(e1,x2) & Actor(e2,x3) & v_rest(e2) & (x2 = x3) & n_hill(x2) & a_grassy(s2) & Theme(s2,x2) & Actor(e1,x1) & v_sit(e1) & (s1 = x1))
exists e1 e2 p1 s1 x1 x2 x3 x4 x5.(exists e3 x6 x7.(Theme(e3,x6) & Actor(e3,x1) & v_have(e3) & n_lunch(x6) & of(x6,x7) & n_picnic(x7)) & n_thing(x1) & while(e2,p1) & Actor(e2,x4) & v_rest(e2) & of(x4,x5) & n_people(x5) & n_group(x4) & on(e1,x3) & n_hill(x3) & a_grassy(s1) & Theme(s1,x3) & Actor(e1,x1) & v_sit(e1) & of(x1,x2) & n_people(x2) & n_group(x1))