a dirt biker clears a jump.
pine cones grow of trees during the summer
pine and biker are two different things
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_clear(e1) & n_jump(x3) & n_biker(x1) & of(x1,x2) & n_dirt(x2))
exists e1 x1 x2 x3 x4.(n_summer(x4) & during(e1,x4) & of(e1,x3) & n_tree(x3) & Actor(e1,x1) & v_grow(e1) & n_cone(x1) & of(x1,x2) & n_pine(x2))