What material is the bench to the right of the ball?
The bench is made of cement.
     src        edge_attr  dst
0      0          reading   13
1      0  to the right of    6
2      0  to the right of    9
3      0  to the right of    3
4      0   to the left of   11
..   ...              ...  ...
139   22   to the left of    2
140   22   to the left of   18
141   22  to the right of   20
142   22   to the left of   21
143   23  to the right of    9

[144 rows x 3 columns]