Is there a chair that is not made of wood?
Yes, there is a chair that is made of plastic.
    src        edge_attr  dst
0     0               of   17
1     0  to the right of   13
2     0  to the right of   15
3     1   to the left of   20
4     1  to the right of   11
5     2   to the left of   17
6     3  to the right of   19
7     5               on   14
8     5   to the left of   10
9     5   to the left of    6
10    5   to the left of   18
11    6   to the left of   18
12    6   to the left of    7
13    6  to the right of    5
14    6   to the left of   17
15    7   to the left of   17
16    7  to the right of    6
17    9  to the right of   16
18    9   to the left of   18
19   10   to the left of   18
20   10               on    2
21   10   to the left of   17
22   10  to the right of    5
23   10               on   14
24   11             with    9
25   11   to the left of   20
26   11       sitting on   10
27   11   to the left of    1
28   11   to the left of   18
29   11               on   10
30   12               of   17
31   12   to the left of   15
32   13  to the right of   15
33   13   to the left of    0
34   13               of   17
35   15   to the left of   13
36   15  to the right of   12
37   15   to the left of    0
38   15               of   17
39   16   to the left of    9
40   16               on   10
41   16   to the left of   18
42   17  to the right of    2
43   17               on    2
44   17  to the right of    6
45   17  to the right of   10
46   17  to the right of    7
47   17               on   14
48   18  to the right of   11
49   18  to the right of    6
50   18  to the right of    9
51   18  to the right of   10
52   18  to the right of   16
53   18  to the right of    5
54   18               on   14
55   19               on   14
56   19   to the left of    3
57   20  to the right of    1
58   20  to the right of   11