Is the steam black or white?
The steam is black.
    src        edge_attr  dst
0     1   to the left of    5
1     1   to the left of   11
2     1   to the left of   16
3     1   to the left of    2
4     2  to the right of    1
5     3  to the right of   14
6     3  to the right of    9
7     3   on the side of    4
8     3  to the right of    5
9     4  to the right of    9
10    4  to the right of    5
11    4  to the right of   14
12    5  to the right of   12
13    5  to the right of    1
14    5   to the left of    4
15    5   to the left of    6
16    5   to the left of    3
17    5  to the right of    8
18    5  to the right of    7
19    6  to the right of    5
20    6  to the right of    9
21    6  to the right of   14
22    7   to the left of   11
23    7   to the left of    5
24    7   to the left of   16
25    8   to the left of    5
26    8   to the left of   16
27    8   to the left of   11
28    9  to the right of   12
29    9   to the left of    6
30    9   to the left of    3
31    9   to the left of    4
32   11  to the right of    1
33   11          driving   14
34   11  to the right of    8
35   11  to the right of    7
36   11           inside    5
37   12   to the left of    9
38   12   to the left of    5
39   14   to the left of    3
40   14   to the left of    4
41   14   to the left of    6
42   15      coming from   14
43   16  to the right of    7
44   16  to the right of    8
45   16  to the right of    1