What is the plate made of?
The plate is made of porcelain.
    src        edge_attr  dst
0     0   to the left of   12
1     1   to the left of   13
2     3   to the left of    8
3     4               on   10
4     4   to the left of    6
5     5               on   10
6     6  to the right of    4
7     8  to the right of    3
8     8               on   10
9    12  to the right of    0
10   13  to the right of    1