A crowd of people, some standing by a river, some in the river with old buildings in the background.
People are swimming in the lake.
Standing and swimming are different.
exists s1 x1 x2 x3 x4 x5 x6 x7.(n_background(x7) & a_topic(x1) & rel(x1,x3) & by(x3,x4) & rel(x4,x5) & in(x5,x4) & with(x4,x6) & in(x6,x7) & n_building(x6) & a_old(s1) & Theme(s1,x6) & n_river(x4) & n_river(x4) & n_thing(x5) & n_standing(x3) & of(x1,x2) & n_people(x2) & n_crowd(x1))
exists e1 x1 x2.(n_lake(x2) & in(e1,x2) & Actor(e1,x1) & v_swim(e1) & n_people(x1))