Are there people to the right of the cart?
No, the person is to the left of the cart.
    src        edge_attr  dst
0     0   to the left of    7
1     1   to the left of   20
2     2   to the left of   11
3     2  to the right of   15
4     2  to the right of   14
..  ...              ...  ...
81   20               by    2
82   20  to the right of   12
83   20  to the right of   13
84   20  to the right of    1
85   20  to the right of   11

[86 rows x 3 columns]