Which place is it?
It is an ocean.
    src        edge_attr  dst
0     0               of    4
1     0  to the right of    7
2     0  to the right of    5
3     1               of    4
4     1  to the right of    5
5     2  to the right of    5
6     2               of    4
7     3               of    4
8     3  to the right of    5
9     4               in    5
10    4  to the right of    5
11    4  to the right of    8
12    5   to the left of    2
13    5   to the left of    1
14    5   to the left of    3
15    5   to the left of    6
16    5   to the left of    4
17    5   to the left of    8
18    5   to the left of    7
19    5   to the left of    0
20    6  to the right of    5
21    7   to the left of    0
22    7  to the right of    5
23    7               of    4
24    8   to the left of    4
25    8  to the right of    5