Young man in an orange hoodie skateboarding.
Man in blue hoodie biking.
no one can be skateboarding while riding on bike.
exists s1 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & n_skateboarding(x2) & of(x2,x4) & n_hoodie(x4) & of(x2,x3) & n_orange(x3) & n_man(x1) & a_young(s1) & Theme(s1,x1))
exists s1 x1 x2 x3.(a_topic(x1) & in(x1,x2) & n_biking(x2) & of(x2,x3) & n_hoodie(x3) & a_blue(s1) & Theme(s1,x2) & n_man(x1))