Where is this train?
The train is at the train station.
    src        edge_attr  dst
0     0               at    1
1     0  to the right of   10
2     0  to the right of   11
3     2  to the right of    7
4     3     hanging from    6
5     3  to the right of    4
6     3   to the left of    6
7     4   to the left of    6
8     4  to the right of    5
9     4   to the left of    3
10    4   to the left of   11
11    4   to the left of    7
12    5   to the left of    4
13    5   to the left of    6
14    6  to the right of    3
15    6  to the right of    5
16    6  to the right of    4
17    7  to the right of    4
18    7   to the left of   13
19    7   to the left of   12
20    7   to the left of    2
21   10   to the left of    0
22   11   to the left of    0
23   11  to the right of    4
24   12  to the right of   13
25   12  to the right of    7
26   13   to the left of   12
27   13  to the right of    7