A group of people stand by a body of water.
Polar bear club getting ready to swim.
A groups of people standing by water are not necessarily part of the Polar Bear Club.
exists e1 x1 x2 x3 x4.(by(e1,x3) & of(x3,x4) & n_water(x4) & n_body(x3) & Actor(e1,x1) & v_stand(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 p1 s1 x1 x2.(exists p2 s2.(Topic(s2,p2) & Actor(s2,x1) & a_ready(s2) & exists e2.(Actor(e2,x1) & v_swim(e2))) & Topic(e1,p1) & Actor(e1,x1) & v_get(e1) & n_club(x1) & of(x1,x2) & n_bear(x2) & a_polar(s1) & Theme(s1,x1))