What is common to the hat and the street?
The color, both the hat and the street are black.
    src        edge_attr  dst
0     0  to the right of   10
1     0  to the right of    5
2     1   to the left of    2
3     1   to the left of   14
4     2  to the right of    5
5     2  to the right of   10
6     2   to the left of   14
7     2  to the right of    1
8     3  to the right of    8
9     3               on    4
10    3  to the right of   12
11    3  to the right of   13
12    3  to the right of    6
13    3  to the right of    7
14    3  to the right of    5
15    5           riding    9
16    5  to the right of    7
17    5   to the left of   14
18    5   to the left of    3
19    5   to the left of    0
20    5  to the right of    6
21    5   to the left of    2
22    6   to the left of    5
23    6   to the left of    8
24    6   to the left of    3
25    6   to the left of   12
26    7   to the left of    8
27    7   to the left of    5
28    7   to the left of    3
29    7   to the left of   12
30    8   to the left of    3
31    8  to the right of    6
32    8  to the right of    7
33    9               on    4
34   10   to the left of   14
35   10   to the left of    2
36   10   to the left of    0
37   12  to the right of    6
38   12  to the right of    7
39   12   to the left of    3
40   13               of    9
41   13   to the left of    3
42   14  to the right of    2
43   14  to the right of   10
44   14  to the right of    1
45   14  to the right of    5