A woman is sitting in something in water.
A woman sits on a raft and reads.
Sitting in something in water can be something other than a raft.
exists e1 x1 x2 x3.(in(e1,x2) & in(x2,x3) & n_water(x3) & n_thing(x2) & Actor(e1,x1) & v_sit(e1) & n_woman(x1))
exists e1 x1 x2 x3 x4.(on(e1,x2) & subset_of(x4,x2) & n_read(x4) & subset_of(x3,x2) & n_raft(x3) & Actor(e1,x1) & v_sit(e1) & n_woman(x1))