Are there any chairs to the left of the book that is on the bookshelf?
No, the chair is to the right of the book.
    src        edge_attr  dst
0     0               on    5
1     1               on   13
2     1   to the left of    8
3     1   to the left of   10
4     3               on    6
5     3   to the left of   16
6     4  to the right of   10
7     5  to the right of   12
8     5  to the right of   16
9     6   to the left of   16
10    7  to the right of   10
11    7  to the right of    9
12    8   to the left of    9
13    8   to the left of   20
14    8  to the right of    1
15    8   to the left of   15
16    9  to the right of   19
17    9   to the left of    7
18    9  to the right of    8
19   10  to the right of    1
20   10   to the left of    7
21   10   to the left of    4
22   10   to the left of   15
23   10   to the left of   20
24   11               of   17
25   11  to the right of   12
26   11  to the right of   17
27   11               at    5
28   11  to the right of   16
29   12               on   16
30   12   to the left of   17
31   12   to the left of    5
32   12   to the left of   11
33   15  to the right of    8
34   15  to the right of   16
35   15  to the right of   18
36   15  to the right of   10
37   15  to the right of   19
38   16  to the right of    6
39   16   to the left of   17
40   16   to the left of    5
41   16  to the right of    3
42   16   to the left of   15
43   16   to the left of   11
44   17  to the right of   12
45   17   to the left of   11
46   17  to the right of   16
47   18  to the right of   19
48   18   to the left of   20
49   18   to the left of   15
50   19   to the left of   15
51   19               on   13
52   19   to the left of   18
53   19   to the left of    9
54   19   to the left of   20
55   20  to the right of   19
56   20  to the right of   18
57   20  to the right of   10
58   20  to the right of    8