What is the fork on?
The fork is on the table.
    src        edge_attr  dst
0     0  to the right of    8
1     0  to the right of    4
2     2  to the right of    5
3     2   to the left of    4
4     3  to the right of    4
5     4   to the left of    0
6     4   to the left of    3
7     4  to the right of    2
8     4  to the right of    5
9     5   to the left of    4
10    5   to the left of    2
11    7               on    6
12    8   to the left of    0
13    8               on    1