Young boy on a floatation device in a lake with boats nearby.
A boy sinks to the bottom of Lake Michigan and drowns.
A boy on a floatation device cannot sink to the bottom of the lake and drown.
exists s1 x1 x2 x3 x4 x5.(a_topic(x1) & on(x1,x2) & in(x2,x4) & with(x4,x5) & r_nearby(x5) & n_boat(x5) & n_lake(x4) & n_device(x2) & of(x2,x3) & n_floatation(x3) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2 x3 x4 x5 x6.(ne_geo_michigan(x4) & (x4 = x5) & ne_geo_lake(x5) & n_bottom(x2) & to(e1,x2) & of(x2,x3) & subset_of(x6,x3) & n_drown(x6) & subset_of(x4,x3) & Actor(e1,x1) & v_sink(e1) & n_boy(x1))