A person rides their bike down a hill.
The person is coming back from riding up the hill.
A person riding down a hill does not necessarily imply that they are coming back from riding up the hill.
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & down(x2,x3) & n_hill(x3) & n_bike(x2) & of(x2,x1) & n_thing(x1) & n_person(x1))
exists e1 p1 x1 x3.(n_hill(x3) & n_person(x1) & exists e2 s1 s2 x2.(from(s1,e2) & a_up(s2) & Manner(e2,s2) & Theme(e2,x3) & Actor(e2,x2) & v_ride(e2) & Theme(s1,x1) & a_back(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_come(e1))