What is the sink made of?
The sink is made of porcelain.
    src        edge_attr  dst
0     0  to the right of    9
1     0  to the right of    8
2     2  to the right of    4
3     3   to the left of   11
4     3               on    6
5     4   to the left of    2
6     4   to the left of   11
7     8   to the left of    0
8     9   to the left of    0
9     9  to the right of   12
10   11   to the left of   16
11   11  to the right of    3
12   11  to the right of    4
13   12   to the left of    9
14   16  to the right of   11