Do the sky and the bus have a different colors?
Yes, the sky is red and the bus is blue.
    src        edge_attr  dst
0     0               in    9
1     0  to the right of   10
2     1      in front of    4
3     2               on   17
4     2      standing on   17
..  ...              ...  ...
56   15   to the left of   10
57   15   to the left of    6
58   15   to the left of    4
59   17   to the left of   11
60   17   to the left of    4

[61 rows x 3 columns]