A person on a skateboard jumps in a curve on the sidewalk.
The person is on the sidewalk on a sunny day.
A person on a skateboard does not imply is is a sunny day.
exists e1 x1 x2 x3 x4.(n_sidewalk(x4) & in(e1,x3) & on(x3,x4) & n_curve(x3) & Actor(e1,x1) & v_jump(e1) & on(x1,x2) & n_skateboard(x2) & n_person(x1))
exists p1 x1 x2.(n_sidewalk(x2) & n_person(x1) & exists s1 x3.(on(x1,x2) & on(x2,x3) & n_day(x3) & a_sunny(s1) & Theme(s1,x3)))