On which side of the image is the empty crate?
The crate is on the left of the image.
    src        edge_attr  dst
0     0  to the right of    9
1     0  to the right of   18
2     0  to the right of   11
3     1   to the left of    4
4     1  to the right of    9
5     1   to the left of   16
6     1   to the left of    8
7     1  to the right of   18
8     2               of   20
9     2  to the right of   15
10    3   to the left of    8
11    3  to the right of    9
12    4               of   16
13    4  to the right of   20
14    4  to the right of    1
15    6  to the right of   17
16    6   to the left of   15
17    8  to the right of    1
18    8               of    7
19    8  to the right of   15
20    8  to the right of   20
21    8  to the right of    3
22    9   to the left of    3
23    9   to the left of   20
24    9   to the left of   18
25    9   to the left of    0
26    9   to the left of    1
27   11   to the left of    0
28   11   to the left of   20
29   11   to the left of   18
30   15   to the left of    2
31   15  to the right of    6
32   15   to the left of    8
33   16  to the right of    1
34   16  to the right of   20
35   17               of   20
36   17   to the left of    6
37   18   to the left of    1
38   18  to the right of    9
39   18  to the right of   11
40   18   to the left of   20
41   18   to the left of    0
42   20  to the right of   18
43   20  to the right of   11
44   20  to the right of    9
45   20   to the left of    4
46   20   to the left of   16
47   20   to the left of    8
48   20               on   10