Someone is snowboarding in the snow on a cold day overlooking the serene mountains.
The person is a professional snowboarder.
Just because someone is snowboarding does not imply that they are professional.
exists e2 e1 s1 s2 x1 x2 x3 x4 x5.(n_mountain(x5) & a_serene(s2) & Theme(s2,x5) & n_snow(x2) & on(e1,x3) & Theme(e2,x5) & Actor(e2,x4) & v_overlook(e2) & (x3 = x4) & n_day(x3) & a_cold(s1) & Theme(s1,x3) & in(e1,x2) & Actor(e1,x1) & v_snowboard(e1) & n_person(x1))
exists p1 x1.(n_person(x1) & exists s1 x2.((x1 = x2) & n_snowboarder(x2) & a_professional(s1) & Theme(s1,x2)))