A person is riding an orange ATV in a large empty field.
A person is learning to use an ATV.
Riding an ATV does not imply learning to use an ATV.
exists e1 s1 s2 x1 x2 x3 x4.(in(e1,x4) & n_field(x4) & a_empty(s2) & Theme(s2,x4) & a_large(s1) & Theme(s1,x4) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_atv(x2) & of(x2,x3) & n_orange(x3) & n_person(x1))
exists e1 p1 x1.(Topic(e1,p1) & Actor(e1,x1) & v_learn(e1) & exists e2 x2.(Theme(e2,x2) & Actor(e2,x1) & v_use(e2) & ne_org_atv(x2)) & n_person(x1))