What is the sink made of?
The sink is made of porcelain.
    src        edge_attr  dst
0     0  to the right of    7
1     1  to the right of    4
2     1             near    4
3     2            below    5
4     3  to the right of    4
5     4             near    1
6     4  to the right of    9
7     4   to the left of    1
8     4   to the left of    3
9     4   to the left of    5
10    4  to the right of    7
11    4   to the left of   11
12    4          next to    1
13    5  to the right of    4
14    6           inside    2
15    6  to the right of    9
16    6  to the right of    8
17    6  to the right of   10
18    7   to the left of    9
19    7   to the left of    0
20    7   to the left of    8
21    7   to the left of    4
22    7   to the left of   10
23    8          next to   10
24    8             near   10
25    8   to the left of    6
26    8   to the left of   10
27    8               on    0
28    8  to the right of    7
29    9   to the left of    4
30    9  to the right of    7
31    9   to the left of    6
32   10  to the right of    7
33   10   to the left of    6
34   10  to the right of    8
35   10             near    8
36   11  to the right of    4