What is on the sign?
The letter is on the sign.
    src        edge_attr  dst
0     0           beside    2
1     0               on    5
2     0  to the right of    6
3     0  to the right of    2
4     0  to the right of   11
5     0  to the right of    7
6     0  to the right of    9
7     0  to the right of    1
8     0  to the right of    8
9     1   to the left of    0
10    1          wearing    9
11    2   to the left of    0
12    4  to the right of   12
13    6   to the left of    0
14    7               of    1
15    7   to the left of    0
16    8   to the left of    0
17    8               on    2
18    9   to the left of    0
19   11   to the left of    0
20   12   to the left of    4