What is in front of the trees?
The parking meter is in front of the trees.
    src        edge_attr  dst
0     1  to the right of   13
1     3            under   13
2     3            under   11
3     3            below   11
4     3            below   13
..  ...              ...  ...
57   20   to the left of   17
58   20  to the right of   14
59   20  to the right of    4
60   20               on   13
61   20   to the left of   11

[62 rows x 3 columns]