A person on a dirt bike is riding up a hill while people watch on the side.
A person is enjoying themselves.
The person might have a different emotion and not be enjoying themselves.
exists e1 p1 s1 x1 x2 x3 x4 x6.(n_side(x6) & exists e2 s2 x5.(a_on(s2) & Manner(e2,s2) & Theme(e2,x6) & Actor(e2,x5) & v_watch(e2) & n_people(x5)) & while(e1,p1) & a_up(s1) & Manner(e1,s1) & Theme(e1,x4) & Actor(e1,x1) & v_ride(e1) & n_hill(x4) & on(x1,x2) & n_bike(x2) & of(x2,x3) & n_dirt(x3) & n_person(x1))
exists e1 x1 x2.(n_group(x2) & Theme(e1,x2) & Actor(e1,x1) & v_enjoy(e1) & n_person(x1))