A woman in a floppy sunhat lounges on a large black tube while in the water.
The tube is floating down the river.
We are led to believe that it is only water she is in and not a river. There was no implication.
exists e1 s1 s2 s3 x1 x2 x3 x4.(n_water(x4) & in(e1,x4) & r_while(e1) & on(e1,x3) & n_tube(x3) & a_black(s3) & Theme(s3,x3) & a_large(s2) & Theme(s2,x3) & Actor(e1,x1) & v_lounge(e1) & in(x1,x2) & n_sunhat(x2) & a_floppy(s1) & Theme(s1,x2) & n_woman(x1))
exists e1 s1 x1 x2.(n_river(x2) & n_tube(x1) & a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_float(e1))