What is the color of the cap?
The cap is blue.
    src        edge_attr  dst
0     1   to the left of    4
1     1   to the left of    3
2     1   to the left of    5
3     2  to the right of   11
4     2  to the right of   10
5     3               on    4
6     3  to the right of    1
7     4  to the right of    1
8     5  to the right of   11
9     5  to the right of   10
10    5  to the right of    1
11    6  to the right of   21
12    6   to the left of   12
13    6  to the right of    8
14    7   to the left of   12
15    8   to the left of    6
16    8   to the left of    9
17    8   to the left of   16
18    8   to the left of   13
19    9  to the right of   21
20    9  to the right of    8
21    9   to the left of   12
22   10   to the left of    2
23   10   to the left of    5
24   11   to the left of    5
25   11   to the left of    2
26   12  to the right of   13
27   12  to the right of   16
28   12  to the right of    6
29   12  to the right of    9
30   12  to the right of    7
31   13   to the left of   16
32   13   to the left of   12
33   13  to the right of    8
34   13               of    6
35   13  to the right of   21
36   14               in   17
37   14   to the left of   20
38   14   to the left of   15
39   15   to the left of   17
40   15   to the left of   20
41   15  to the right of   14
42   16  to the right of   13
43   16  to the right of   21
44   16   to the left of   12
45   16               of    6
46   16  to the right of    8
47   17  to the right of   20
48   17  to the right of   15
49   20  to the right of   15
50   20   to the left of   17
51   20  to the right of   14
52   21   to the left of   16
53   21   to the left of   13
54   21   to the left of    6
55   21   to the left of    9