What is in front of the door?
The step is in front of the door.
    src        edge_attr  dst
0     0             near    6
1     0      in front of   15
2     0           behind   10
3     0  to the right of   16
4     0  to the right of    4
5     0  to the right of    3
6     0   to the left of   13
7     1  to the right of   13
8     2   to the left of   16
9     2   to the left of    3
10    2   to the left of    4
11    3           behind    4
12    3   to the left of    0
13    3  to the right of    7
14    3  to the right of    2
15    3   to the left of   13
16    3            above   16
17    4      in front of    3
18    4   to the left of   10
19    4  to the right of   16
20    4  to the right of    2
21    4   to the left of    0
22    4  to the right of    7
23    5      in front of   15
24    6          next to    0
25    6               by    0
26    6               on   15
27    7   to the left of    3
28    7   to the left of    4
29    8        on top of   15
30    9      in front of   15
31   10      in front of    0
32   10  to the right of   16
33   10  to the right of    4
34   12           behind   15
35   13  to the right of    3
36   13   to the left of    1
37   13  to the right of    0
38   15               by    5
39   15           behind    5
40   15           behind    0
41   15      in front of   12
42   16   to the left of    4
43   16   to the left of   10
44   16            under    3
45   16  to the right of    2
46   16   to the left of    0