Is the knife in the bottom part of the image?
Yes, the knife is in the bottom of the image.
    src        edge_attr  dst
0     0        on top of   10
1     0   to the left of    3
2     1  to the right of   13
3     1  to the right of   12
4     1  to the right of   14
5     1  to the right of   16
6     2               on    9
7     2   to the left of   11
8     3  to the right of    0
9     3   to the left of    4
10    3  to the right of    9
11    4  to the right of    3
12    6          holding   17
13    6       sitting on    5
14    6          holding    4
15    7  to the right of   17
16    7  to the right of   15
17    8        on top of    9
18    9   to the left of    3
19   10        on top of    9
20   11  to the right of    2
21   12               on   13
22   12   to the left of    1
23   12  to the right of   14
24   13   to the left of    1
25   14               on   13
26   14   to the left of   16
27   14   to the left of    1
28   14   to the left of   12
29   14        on top of   13
30   15   to the left of    7
31   16   to the left of    1
32   16  to the right of   14
33   16        on top of   12
34   16               on   12
35   17   to the left of    7