Is the fork to the left of a pizza?
Yes, the fork is to the left of a pizza.
    src        edge_attr  dst
0     1   to the left of    3
1     2   to the left of    6
2     3  to the right of   10
3     3  to the right of    1
4     4   to the left of   12
5     5   to the left of    6
6     6  to the right of    2
7     6  to the right of   10
8     6  to the right of    5
9     8  to the right of   15
10    8   to the left of   14
11    9               of   14
12   10   to the left of    6
13   10   to the left of    3
14   12  to the right of   13
15   12  to the right of   16
16   12  to the right of    4
17   13   to the left of   12
18   14  to the right of    8
19   15   to the left of    8
20   16               on    0
21   16   to the left of   12