Where is the placemat?
The place mat is on the floor.
    src        edge_attr  dst
0     0   to the left of    7
1     0   to the left of    3
2     0           behind    1
3     2  to the right of   18
4     2  to the right of   12
5     2   to the left of    7
6     2   to the left of    6
7     3  to the right of   18
8     3  to the right of    0
9     4  to the right of    5
10    4  to the right of   11
11    4  to the right of   14
12    5   to the left of   16
13    5   to the left of    4
14    5  to the right of    8
15    5  to the right of   18
16    6  to the right of    2
17    7  to the right of    2
18    7  to the right of    0
19    7  to the right of   18
20    8   to the left of    5
21    8   to the left of   14
22   11   to the left of    4
23   11  to the right of   14
24   11   to the left of   16
25   11  to the right of   17
26   12   to the left of    2
27   14   to the left of   11
28   14  to the right of   17
29   14  to the right of    8
30   14   to the left of    4
31   16  to the right of   11
32   16  to the right of    5
33   17               of    1
34   17   to the left of   14
35   17   to the left of   11
36   18               on   15
37   18   to the left of    2
38   18   to the left of    7
39   18   to the left of    5
40   18   to the left of    3