What color do you think the words the sign is with are?
The words are blue.
    src        edge_attr  dst
0     0               on   15
1     0               on    4
2     1  to the right of   15
3     1  to the right of    8
4     1  to the right of    6
5     2  to the right of   15
6     3               of    0
7     3  to the right of    6
8     5  to the right of    6
9     6           around    0
10    6               on    4
11    6   to the left of    1
12    6   to the left of    5
13    6   to the left of    3
14    6   to the left of    8
15    8   to the left of    1
16    8  to the right of    6
17    9               on    4
18   10               on    9
19   11               on    9
20   12               by    0
21   14               of    0
22   15   to the left of    2
23   15   to the left of    1