What was used to make the sink, stainless steel or wood?
The sink is made of wood.
    src        edge_attr  dst
0     0   to the left of    2
1     0   to the left of    1
2     0   to the left of    5
3     0   to the left of    3
4     1  to the right of    0
5     1   to the left of    4
6     2  to the right of    0
7     3   to the left of    4
8     3  to the right of    0
9     4  to the right of    1
10    4  to the right of    3
11    5  to the right of    0