A skateboarder is doing a trick in the air with his skateboard on a red ramp while people stand around looking.
He is snowboarding down the Alps.
A person who does skateboard on a red ramp cannot be  snowboarding down the Alps.
exists e1 p1 s1 x1 x2 x3 x4 x5.(n_skateboard(x4) & of(x4,x3) & n_male(x3) & n_air(x3) & exists e2 e3 x6.(around(e2,e3) & Actor(e3,x6) & v_look(e3) & Actor(e2,x6) & v_stand(e2) & n_people(x6)) & while(e1,p1) & with(e1,x4) & on(x4,x5) & n_ramp(x5) & a_red(s1) & Theme(s1,x5) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & in(x2,x3) & n_trick(x2) & n_skateboarder(x1))
exists e1 s1 x1 x2.(ne_org_alps(x2) & n_male(x1) & a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_snowboard(e1))