What's on the shelf?
The sandwiches are on the shelf.
     src        edge_attr  dst
0      0  to the right of   10
1      0           behind   14
2      0  to the right of   18
3      1  to the right of    6
4      1          wearing   12
..   ...              ...  ...
113   34  to the right of    7
114   35   to the left of   36
115   35   to the left of   20
116   36  to the right of   35
117   36   to the left of    1

[118 rows x 3 columns]