What is in the train station?
The train is in the train station.
    src        edge_attr  dst
0     0               on   12
1     1   to the left of   10
2     1   to the left of   11
3     2   to the left of   11
4     3   to the left of    8
5     4  to the right of   13
6     5  to the right of   11
7     7  to the right of   11
8     8  to the right of   11
9     8  to the right of    3
10   10  to the right of    1
11   10   to the left of   12
12   11  to the right of    1
13   11  to the right of    2
14   11   to the left of    7
15   11   to the left of    5
16   11               in    6
17   11   to the left of    8
18   12  to the right of   10
19   12            below    4
20   12            below    8
21   13            above   11
22   13   to the left of    4