What is on the street sign that looks green and white?
The letter is on the street sign.
    src        edge_attr  dst
0     0   to the left of   14
1     0   to the left of   16
2     0   to the left of    7
3     0   to the left of    1
4     0               on    6
..  ...              ...  ...
81   16   to the left of    7
82   16   to the left of    1
83   16  to the right of    0
84   16   to the left of   14
85   16   to the left of    8

[86 rows x 3 columns]