People are gathering on the porch of a wooden house built along the beach.
The people are walking in the surf
People cannot be gathering on the porch and walking in the surf at the same time.
exists e2 e1 s1 x1 x2 x3 x4 x5.(n_beach(x5) & n_porch(x2) & on(e1,x2) & of(x2,x3) & along(e2,x5) & Theme(e2,x4) & v_build(e2) & (x3 = x4) & n_house(x3) & a_wooden(s1) & Theme(s1,x3) & Actor(e1,x1) & v_gather(e1) & n_people(x1))
exists e1 x1 x2.(n_surf(x2) & n_people(x1) & in(e1,x2) & Actor(e1,x1) & v_walk(e1))