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