Where is the couple?
The couple is in the water.
    src        edge_attr  dst
0     0   to the left of   17
1     0  to the right of   19
2     0   to the left of    9
3     1           behind    2
4     1  to the right of   12
5     2               in    3
6     2      in front of    1
7     2  to the right of   15
8     2  to the right of   13
9     3  to the right of   13
10    6   to the left of   17
11    6   to the left of    9
12    6       sitting on    7
13    6  to the right of   15
14    6  to the right of   13
15    8   to the left of   14
16    9  to the right of    6
17    9  to the right of    0
18    9  to the right of   19
19   10               in    3
20   11          next to   16
21   12   to the left of    1
22   12   to the left of   18
23   13   to the left of    2
24   13   to the left of    3
25   13   to the left of    6
26   14  to the right of    8
27   14  to the right of   18
28   14               by    1
29   15   to the left of    6
30   15   to the left of    2
31   15               on    7
32   16       sitting in    3
33   16             near   11
34   16               in    3
35   17  to the right of    0
36   17  to the right of    6
37   17  to the right of   19
38   18  to the right of   12
39   18   to the left of   14
40   19   to the left of    9
41   19   to the left of    0
42   19   to the left of   17