What color is that hat?
The hat is black.
    src        edge_attr  dst
0     0  to the right of    7
1     2  to the right of    5
2     2  to the right of   11
3     4   to the left of   14
4     5   to the left of    2
5     7   to the left of    0
6     9   to the left of   14
7    10  to the right of   11
8    11   to the left of    2
9    11   to the left of   10
10   13   to the left of   18
11   14  to the right of    4
12   14  to the right of    9
13   18  to the right of   13