Do you see an apple there that is not red?
No, there is an apple but it is red.
    src        edge_attr  dst
0     1  to the right of   15
1     1  to the right of   14
2     1  to the right of   19
3     3   to the left of    4
4     3   to the left of    9
5     4  to the right of    3
6     4               on    5
7     5   to the left of   16
8     5   to the left of   14
9     6  to the right of    8
10    7               of    1
11    7  to the right of   16
12    7  to the right of   14
13    8   to the left of    6
14    9  to the right of    3
15   11   to the left of   14
16   11   to the left of   19
17   12   to the left of   14
18   12   to the left of   15
19   13   to the left of   14
20   13   to the left of   19
21   13   to the left of   16
22   14  to the right of   13
23   14  to the right of   12
24   14  to the right of    5
25   14  to the right of   11
26   14   to the left of    7
27   14   to the left of    1
28   15   to the left of    1
29   15  to the right of   12
30   16   to the left of    7
31   16               of   14
32   16  to the right of    5
33   16  to the right of   13
34   19  to the right of   13
35   19   to the left of    1
36   19  to the right of   11