A group of multi-ethnic young people sit in a circle on grass next to a hill.
The group of people are walking up the hill.
The group cannot walk up the hill and sit by the hill at the same time.
exists e1 s1 s2 x1 x2 x3 x4 x5 x6.(on(e1,x4) & to(x5,x6) & n_hill(x6) & next(x4,x5) & n_thing(x5) & n_grass(x4) & in(e1,x3) & n_circle(x3) & Actor(e1,x1) & v_sit(e1) & of(x1,x2) & n_people(x2) & a_young(s2) & Theme(s2,x2) & a_multi-ethnic(s1) & Theme(s1,x2) & n_group(x1))
exists e1 s1 x1 x2 x3.(n_hill(x3) & n_group(x1) & a_up(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x1) & v_walk(e1) & of(x1,x2) & n_people(x2))