What color does the motorbike have?
The motorbike has blue color.
    src    edge_attr  dst
0     1           of    2
1     2  in front of    7
2     3           on    2
3     3           of    2
4     4           on    2
5     4  sleeping on    3
6     4  sleeping on    2
7     4           on    3
8     5           of    4
9     6           of    4
10    7       behind    2
11    8           of    4