Is the bread to the right or to the left of the sandwich that is in the middle?
The bread is to the right of the sandwich.
    src       edge_attr  dst
0     0              on   16
1     0  to the left of   10
2     1  to the left of    4
3     1  to the left of   10
4     2  to the left of   10
..  ...             ...  ...
69   20           above    7
70   20  to the left of   10
71   20  to the left of    4
72   21              in   20
73   21  to the left of   10

[74 rows x 3 columns]