Is the sign above the arrow?
Yes, the sign is above the arrow.
    src        edge_attr  dst
0     0               on   13
1     0               in   14
2     0  to the right of    7
3     0  to the right of    6
4     0  to the right of   12
5     0  to the right of    4
6     0               in   13
7     1            above    7
8     1            above    8
9     2   to the left of   17
10    2   to the left of   14
11    4   to the left of    0
12    4   to the left of   12
13    4   to the left of   14
14    6   to the left of    0
15    6   to the left of   14
16    7               on   13
17    7            below    1
18    7   to the left of    0
19    7       looking at   18
20    7   to the left of   14
21    7          holding   16
22    7            using   16
23    7   to the left of   10
24    8               on    1
25    8            below    1
26   10          next to   10
27   10  to the right of    7
28   10             near   10
29   12  to the right of    4
30   12   to the left of    0
31   12   to the left of   14
32   14  to the right of    7
33   14  to the right of    4
34   14  to the right of   12
35   14  to the right of    2
36   14  to the right of    6
37   17  to the right of    2