What's the couple before?
The couple is in front of the flowers.
    src        edge_attr  dst
0     0   to the left of    3
1     0               on   13
2     0   to the left of   12
3     1  to the right of   12
4     2   on the side of    3
5     2           behind    3
6     2   to the left of    7
7     2  to the right of    5
8     3          holding   12
9     3      in front of    2
10    3  to the right of   13
11    3  to the right of   11
12    3   to the left of    7
13    3  to the right of   10
14    3  to the right of    0
15    4               on   13
16    5   to the left of    2
17    5   to the left of    7
18    6   to the left of    7
19    7  to the right of    3
20    7  to the right of    2
21    7  to the right of    6
22    7  to the right of    8
23    7  to the right of    5
24    8   to the left of    7
25    8  to the right of   12
26    9               on   13
27   10               on   13
28   10   to the left of    3
29   11               on   13
30   11   to the left of    3
31   12   to the left of    1
32   12          cutting   13
33   12  to the right of    0
34   12   to the left of    8
35   12  to the right of   13
36   13   to the left of   12
37   13   to the left of    3