On which side is the metal container?
The container is on the right of the image.
    src        edge_attr  dst
0     1   to the left of   11
1     2   to the left of    3
2     2   to the left of    4
3     3  to the right of    2
4     3   to the left of    5
5     4  to the right of    2
6     5  to the right of    3
7     6   to the left of   10
8     6  to the right of   12
9     9   to the left of   10
10   10  to the right of    6
11   10  to the right of    9
12   11  to the right of    1
13   12   to the left of    6