Which material is the bench made of, wood or steel?
The bench is made of wood.
    src        edge_attr  dst
0     2   to the left of   14
1     4               on    5
2     4  to the right of    7
3     7   to the left of    4
4     8   to the left of   13
5     8               on    9
6    10   to the left of   13
7    11  to the right of   12
8    12   to the left of   11
9    12               in   11
10   13  to the right of   10
11   13  to the right of    8
12   14  to the right of    2
13   15               in   16