Which place is it?
It is a zoo.
    src        edge_attr  dst
0     0   to the left of   10
1     0   to the left of    5
2     0   to the left of    8
3     0  to the right of   13
4     2   to the left of    7
5     2   to the left of    6
6     2   to the left of   14
7     3   to the left of   12
8     3  to the right of   14
9     3  to the right of   15
10    4   to the left of   14
11    5  to the right of    7
12    5  to the right of    0
13    6  to the right of   14
14    6   to the left of    8
15    6  to the right of    2
16    7  to the right of   14
17    7   to the left of    5
18    7   to the left of    8
19    7  to the right of    2
20    8  to the right of    7
21    8  to the right of    6
22    8  to the right of    0
23   10  to the right of    0
24   11  to the right of   14
25   12  to the right of   15
26   12  to the right of   14
27   12  to the right of    3
28   13   to the left of    0
29   14  to the right of    4
30   14   to the left of    6
31   14   to the left of   15
32   14   to the left of   12
33   14   to the left of   11
34   14   to the left of    3
35   14  to the right of    2
36   14   to the left of    7
37   15   to the left of   12
38   15  to the right of   14
39   15   to the left of    3