What is the color of the oven door?
The oven door is silver.
   src        edge_attr  dst
0    1               on    7
1    1  to the right of    6
2    2               on    4
3    2  to the right of    3
4    3   to the left of    2
5    6   to the left of    1
6    6   to the left of    7
7    7  to the right of    6