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