Are there cans or trays that are silver?
Yes, the can is silver.
   src        edge_attr  dst
0    0  to the right of    8
1    0  to the right of   10
2    2  to the right of    6
3    4  to the right of    6
4    6   to the left of    9
5    6   to the left of    4
6    6   to the left of    2
7    8   to the left of    0
8    9  to the right of    6
9   10   to the left of    0