Person with orange backpack, hiking.
The person is about to go skiing.
Hiking and skiing are different activities.
exists s1 x1 x2 x3.(ne_nam_person(s1) & a_topic(s1) & with(s1,x1) & rel(x1,x3) & n_hiking(x3) & n_backpack(x1) & of(x1,x2) & n_orange(x2))
exists p1 s1 x1.(n_person(x1) & Topic(s1,p1) & Actor(s1,x1) & a_about(s1) & exists e1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_go(e1) & n_skiing(x2)))