Is the color of the hat brown?
Yes, the hat is brown.
    src        edge_attr  dst
0     1   to the left of    8
1     2   to the left of   16
2     2  to the right of    7
3     2   to the left of    8
4     4  to the right of    5
5     5   to the left of    4
6     5   to the left of   14
7     6  to the right of   12
8     7   to the left of    2
9     7   to the left of   16
10    8  to the right of    1
11    8  to the right of    2
12   11               on    0
13   12   to the left of    6
14   12   to the left of   15
15   14  to the right of    5
16   15  to the right of   12
17   15               on    6
18   16  to the right of    2
19   16  to the right of    7