A group of men in the water.
the river is completely dry while the group is trying to play with water
when river is completely dry, group of men cannot be in water or they cannot play in water
exists x1 x2 x3.(n_water(x3) & a_topic(x1) & of(x1,x2) & in(x2,x3) & n_man(x2) & n_group(x1))
exists p1 s1 x1 x2.(n_group(x2) & n_river(x1) & exists e1 p2.(Topic(e1,p2) & Actor(e1,x2) & v_try(e1) & exists e2 x3.(with(e2,x3) & n_water(x3) & Actor(e2,x2) & v_play(e2))) & while(s1,p1) & r_completely(s1) & Theme(s1,x1) & a_dry(s1))