A group of boys is sitting in a large mud puddle in a grassy field.
A group of boys are sitting in a pool of water at the beach.
A mud puddle and a pool of water are not the same thing.
exists e1 s1 s2 x1 x2 x3 x4 x5.(in(e1,x3) & in(x3,x5) & n_field(x5) & a_grassy(s2) & Theme(s2,x5) & n_puddle(x3) & of(x3,x4) & n_mud(x4) & a_large(s1) & Theme(s1,x3) & Actor(e1,x1) & v_sit(e1) & of(x1,x2) & n_boy(x2) & n_group(x1))
exists e1 x1 x2 x3 x4 x5.(n_beach(x5) & at(e1,x5) & in(e1,x3) & of(x3,x4) & n_water(x4) & n_pool(x3) & Actor(e1,x1) & v_sit(e1) & of(x1,x2) & n_boy(x2) & n_group(x1))