A person in a red jacket snowboarding.
A person is swimming.
The person can not be snowboarding and swimming at the same time.  The two activities are usually done in different seasons.
exists s1 x1 x2 x3.(a_topic(x1) & in(x1,x2) & n_snowboarding(x2) & of(x2,x3) & n_jacket(x3) & a_red(s1) & Theme(s1,x2) & n_person(x1))
exists p1 x1.(exists x2.((x1 = x2) & n_swimming(x2)) & n_person(x1))