Are there any books on the desk?
Yes, there is a book on the desk.
    src        edge_attr  dst
0     0               on   11
1     2  to the right of   12
2     2  to the right of   10
3     2   to the left of   14
4     2  to the right of    8
5     2  to the right of    7
6     3   to the left of   14
7     3  to the right of    8
8     6   to the left of    7
9     7   to the left of   14
10    7   to the left of    2
11    7  to the right of    6
12    8               on    7
13    8   to the left of    3
14    8   to the left of   14
15    8   to the left of    2
16    9  to the right of   13
17    9   to the left of   14
18   10   to the left of   14
19   10               on    1
20   10   to the left of    2
21   12   to the left of    2
22   13   to the left of   15
23   13   to the left of    9
24   14  to the right of    3
25   14  to the right of   10
26   14  to the right of    2
27   14  to the right of    7
28   14  to the right of    8
29   14  to the right of    9
30   15               on   15
31   15  to the right of   13