Is the bottle to the left or to the right of the tap?
The bottle is to the left of the tap.
    src        edge_attr  dst
0     0               on    1
1     0   to the left of    1
2     0   to the left of   15
3     1   to the left of   17
4     1  to the right of   18
5     1   to the left of   15
6     1  to the right of    0
7     2   to the left of   17
8     2  to the right of   12
9     2   to the left of    5
10    2   to the left of   11
11    4   to the left of   17
12    4               on   10
13    5  to the right of    9
14    5  to the right of    2
15    5  to the right of    6
16    6   to the left of   11
17    6  to the right of    7
18    6   to the left of    5
19    7   to the left of    6
20    7   to the left of    8
21    8  to the right of    7
22    8  to the right of   13
23    9   to the left of    5
24    9   to the left of   17
25   10  to the right of   13
26   11  to the right of    6
27   11   to the left of   17
28   11  to the right of    2
29   11       sitting on    5
30   12   to the left of    2
31   13   to the left of    8
32   13   to the left of   10
33   15  to the right of    1
34   15  to the right of    0
35   17  to the right of    2
36   17  to the right of   11
37   17  to the right of    9
38   17  to the right of    4
39   17  to the right of    1
40   18   to the left of    1