What color is the trash can?
The trash can is silver.
    src        edge_attr  dst
0     0   to the left of    2
1     0   to the left of    9
2     0   to the left of    8
3     0   to the left of    3
4     1  to the right of    5
5     1   to the left of    8
6     2  to the right of    7
7     2  to the right of    4
8     2  to the right of    0
9     3               on    9
10    3  to the right of    0
11    4   to the left of    2
12    4   to the left of    8
13    5   to the left of    1
14    7   to the left of    8
15    7   to the left of    2
16    8  to the right of    4
17    8  to the right of    7
18    8  to the right of    1
19    8  to the right of    0
20    9  to the right of    0