Is the fence to the left or to the right of the train?
The fence is to the left of the train.
    src        edge_attr  dst
0     0               by    2
1     0  to the right of    2
2     1   to the left of    7
3     1           behind    2
4     2             near    4
5     2      in front of    1
6     2  to the right of    4
7     2   to the left of    0
8     2  to the right of    6
9     2  to the right of    5
10    4          next to    2
11    4               by    2
12    4   to the left of    2
13    5   to the left of    2
14    5  to the right of    6
15    6   to the left of    2
16    6   to the left of    5
17    7  to the right of    1
18    8               by    2
19    8           beside    2