What is the bench made of?
The bench is made of concrete.
    src        edge_attr  dst
0     0  to the right of    4
1     1          next to    4
2     1             near    4
3     1  to the right of    4
4     1               of    2
5     2          wearing    7
6     2      in front of   10
7     2            above    4
8     2          wearing    6
9     2       sitting on    3
10    2   to the left of   10
11    2               on    3
12    2  to the right of    5
13    4             near    1
14    4            below    9
15    4            under    2
16    4   to the left of    1
17    4            below    2
18    4   to the left of    0
19    5   to the left of    2
20    5   to the left of    7
21    7  to the right of    5
22    7   to the left of   10
23    9            above   11
24   10  to the right of    7
25   10  to the right of    2
26   10           behind    2