Is the fork in the top part of the picture?
Yes, the fork is in the top of the image.
    src        edge_attr  dst
0     0               on    5
1     0               on   17
2     0   to the left of   15
3     0   to the left of   13
4     1   to the left of   11
5     2               in   16
6     2   to the left of    6
7     3   to the left of    4
8     4  to the right of    3
9     4   to the left of   15
10    5               on   19
11    6  to the right of    2
12    9  to the right of   14
13   10   to the left of   11
14   11  to the right of   10
15   11  to the right of    1
16   11  to the right of   17
17   13  to the right of    0
18   13  to the right of   17
19   14   to the left of    9
20   14   to the left of   16
21   15  to the right of   17
22   15  to the right of    4
23   15  to the right of    0
24   16  to the right of   14
25   16               on   17
26   17   to the left of   11
27   17   to the left of   13
28   17   to the left of   15
29   18               in   16