Is the cart to the right of the other cart empty and green?
No, the cart is empty but brown.
    src        edge_attr  dst
0     2             near    7
1     2  to the right of    8
2     2  to the right of   21
3     2   to the left of    5
4     2   to the left of    4
..  ...              ...  ...
82   21   to the left of    4
83   21   to the left of    2
84   23               by    7
85   23  to the right of   16
86   23   to the left of   13

[87 rows x 3 columns]