A male skateboarder takes a ramp at a local skate park.
A snowboarder glides down a mountain path.
One cannot be a skateboarder and a snowboarder at the same time. Being at a skate park would imply that they are not at a mountain.
exists e1 s1 s2 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & at(x2,x3) & n_park(x3) & of(x3,x4) & n_skate(x4) & a_local(s2) & Theme(s2,x3) & n_ramp(x2) & n_skateboarder(x1) & a_male(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3.(a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_glide(e1) & n_path(x2) & of(x2,x3) & n_mountain(x3) & n_snowboarder(x1))