Is the step made out of the same material as the staircase?
No, the step is made of cement and the staircase is made of wood.
    src        edge_attr  dst
0     0  to the right of    7
1     0  to the right of   18
2     1   to the left of   20
3     1      in front of    5
4     2  to the right of   17
5     2  to the right of   19
6     3   to the left of   22
7     5           behind    1
8     6   to the left of    8
9     7   to the left of    0
10    8  to the right of    6
11    8  to the right of   16
12    8   to the left of   19
13    8             with    9
14    8   to the left of   17
15    9   to the left of   17
16   10  to the right of   14
17   10   to the left of   26
18   14   to the left of   10
19   16   to the left of    8
20   17   to the left of    2
21   17  to the right of    9
22   17  to the right of    8
23   18   to the left of    0
24   19   to the left of    2
25   19  to the right of    8
26   20   to the left of   27
27   20  to the right of    1
28   21   to the left of   25
29   21   to the left of   26
30   22  to the right of    3
31   22  to the right of   23
32   22  to the right of   24
33   23   to the left of   22
34   24   to the left of   22
35   25   to the left of   28
36   25  to the right of   21
37   25  to the right of   27
38   26  to the right of   21
39   26  to the right of   10
40   27  to the right of   20
41   27   to the left of   25
42   27   to the left of   28
43   28  to the right of   25
44   28  to the right of   27