Which place is it?
It is a lake.
    src        edge_attr  dst
0     1   to the left of    5
1     1               at    6
2     1   to the left of    7
3     2  to the right of    3
4     2               by    6
5     2   on the side of    6
6     2             near    6
7     3               on    8
8     3               on    6
9     3               in    6
10    3   to the left of    2
11    3               at    6
12    3   to the left of    5
13    4               at    6
14    5  to the right of    3
15    5  to the right of    1
16    5               on    2
17    6               on    8
18    6             near    2
19    7  to the right of    1
20    8               of    6