Is the water brown?
Yes, the water is brown.
   src        edge_attr  dst
0    0             near    1
1    0           beside    1
2    1             near    0
3    4   to the left of    5
4    4  to the right of    6
5    5   to the left of    7
6    5  to the right of    4
7    6   to the left of    4
8    7  to the right of    5