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