In front of what's the building?
The building is in front of the flowers.
    src        edge_attr  dst
0     0   to the left of    9
1     0   to the left of   15
2     0   to the left of    2
3     1      in front of    4
4     2  to the right of    0
5     3   to the left of    4
6     3   to the left of    7
7     4           behind    1
8     4  to the right of    3
9     4  to the right of   13
10    4  to the right of   19
11    4  to the right of   14
12    4  to the right of    8
13    4  to the right of   18
14    5   to the left of   15
15    5   to the left of   12
16    5   to the left of    9
17    5   to the left of    6
18    5  to the right of   16
19    6               in   11
20    6  to the right of    5
21    7  to the right of   19
22    7  to the right of    3
23    8   to the left of    4
24    8   to the left of   10
25    9  to the right of    0
26    9  to the right of    5
27   10  to the right of   17
28   10  to the right of   18
29   10  to the right of   14
30   10  to the right of   13
31   10  to the right of    8
32   12  to the right of    5
33   13   to the left of    4
34   13   to the left of   10
35   14   to the left of    4
36   14   to the left of   10
37   15  to the right of    5
38   15               in   11
39   15  to the right of    0
40   16   to the left of    5
41   17   to the left of   10
42   18   to the left of   10
43   18       walking on   18
44   18   to the left of    4
45   19   to the left of    7
46   19   to the left of    4