Are the shelves to the left of the man black or green?
The shelves are black.
    src        edge_attr  dst
0     0          wearing    1
1     0   to the left of   14
2     0  to the right of   18
3     0   to the left of   20
4     0          holding   21
..  ...              ...  ...
86   22   to the left of    2
87   22   to the left of    9
88   22  to the right of    7
89   23  to the right of    5
90   23  to the right of   13

[91 rows x 3 columns]