Is the calm water brown or white?
The water is brown.
    src        edge_attr  dst
0     0   to the left of    6
1     2   to the left of    6
2     2  to the right of    8
3     3            above    7
4     5  to the right of    6
5     5  to the right of    7
6     6   to the left of    5
7     6  to the right of    7
8     6  to the right of    0
9     6  to the right of    2
10    7               in    9
11    7            below    3
12    7  to the right of    8
13    7   to the left of    6
14    7   to the left of    5
15    7            under    3
16    7               on    9
17    8   to the left of    2
18    8   to the left of    7