A girl skateboarding in red shoes on pavement
A person riding their bike.
A boy or girl is a person. Skateboarding and riding a bike are different activities.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & in(e1,x3) & on(x3,x4) & n_pavement(x4) & n_shoe(x3) & a_red(s1) & Theme(s1,x3) & Actor(e1,x2) & v_skateboard(e1) & (x1 = x2) & n_girl(x1))
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_bike(x3) & of(x3,x1) & n_thing(x1) & (x1 = x2) & n_person(x1))