What comes from the black train?
The smoke comes from the train.
    src        edge_attr  dst
0     0  to the right of    4
1     0  to the right of    3
2     2  to the right of    4
3     3   to the left of    0
4     3               on    4
5     3   to the left of    7
6     4           behind    7
7     4            below    5
8     4           around    7
9     4   to the left of    0
10    4   to the left of    6
11    4   to the left of    2
12    4   to the left of    7
13    5               in    1
14    6  to the right of    4
15    7  to the right of    3
16    7  to the right of    4
17    7      in front of    4
18    8   to the left of    9
19    9  to the right of    8
20    9      coming from    7