A group of people in white masks are holding a banner
A group of people are swimming in a pool.
People holding a banner cannot be simultaneously swimming in a pool.
exists e1 s1 x1 x2 x3 x4.(Theme(e1,x4) & Actor(e1,x1) & v_hold(e1) & n_banner(x4) & of(x1,x2) & in(x2,x3) & n_mask(x3) & a_white(s1) & Theme(s1,x3) & n_people(x2) & n_group(x1))
exists e1 x1 x2 x3.(in(e1,x3) & n_pool(x3) & Actor(e1,x1) & v_swim(e1) & of(x1,x2) & n_people(x2) & n_group(x1))