What is coming out of the vehicle that the fence is next to?
The steam is coming out of the train.
    src        edge_attr  dst
0     2             near    3
1     3          next to    2
2     3             near    2
3     3   to the left of    7
4     4   to the left of    7
5     4   to the left of    8
6     4    coming out of    2
7     7  to the right of    4
8     7  to the right of    8
9     7  to the right of    3
10    8   to the left of    7
11    8  to the right of    4
12   10           inside    2
13   10               in    9
14   11          wearing    6