The water is in front of what?
The water is in front of the trees.
    src        edge_attr  dst
0     0  to the right of    7
1     1   to the left of    6
2     4               in    5
3     4  to the right of   10
4     4  to the right of    9
5     5      in front of    6
6     6           beside    5
7     6  to the right of    1
8     6           behind    5
9     7   to the left of    0
10    7               on    9
11    7         crossing    5
12    7           riding    9
13    7   to the left of    8
14    8               on    4
15    8  to the right of    7
16    9   to the left of    4
17   10   to the left of    4