A snowboarder slides along a ramp over a snowy gap.
A person sitting in the snow with a snowboard.
A snowboarder is a person but if they slide along a ramp they cannot be sitting in the snow at the same time.
exists e1 s1 x1 x2 x3.(along(e1,x2) & over(x2,x3) & n_gap(x3) & a_snowy(s1) & Theme(s1,x3) & n_ramp(x2) & Actor(e1,x1) & v_slide(e1) & n_snowboarder(x1))
exists e1 x1 x2 x3 x4.(n_snow(x3) & a_topic(x1) & with(e1,x4) & n_snowboard(x4) & in(e1,x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_person(x1))