Dirt bikers on a trail.
woman knitting
It's not common to be knitting on a trail.
exists x1 x2 x3.(a_topic(x1) & on(x1,x3) & n_trail(x3) & n_biker(x1) & (x1 = x2) & ne_nam_dirt(x2))
exists e1 x1 x2.(a_topic(x1) & Actor(e1,x2) & v_knit(e1) & (x1 = x2) & n_woman(x1))