A snowboarder hangs upside down from his board during a maneuver in front of a crowd of people.
A person is snowboarding in front of others.
A crowd of people means that he is obviously in front of others.
exists e1 p1 x1 x2 x3 x4 x5 x6.(during(e1,x2) & in(x2,x3) & of(x3,x4) & of(x4,x5) & n_people(x5) & n_crowd(x4) & n_front(x3) & n_maneuver(x2) & exists s1.(r_upside(s1) & from(s1,x6) & Theme(s1,x1) & a_down(s1)) & n_board(x6) & of(x6,x1) & n_male(x1) & Topic(e1,p1) & Actor(e1,x1) & v_hang(e1) & n_snowboarder(x1))
exists e1 x1 x2 x3.(in(e1,x2) & of(x2,x3) & -(x3 = x1) & n_person(x1) & n_person(x3) & n_front(x2) & Actor(e1,x1) & v_snowboard(e1) & n_person(x1))