Are the books to the right or to the left of the bed?
The books are to the right of the bed.
    src        edge_attr  dst
0     0  to the right of    4
1     0  to the right of    2
2     2   to the left of    5
3     2   to the left of    0
4     2   to the left of    7
5     2  to the right of   12
6     3  to the right of    8
7     3  to the right of   11
8     3  to the right of    9
9     3  to the right of    4
10    3  to the right of   14
11    4   to the left of    0
12    4   to the left of    5
13    4   to the left of    3
14    5  to the right of    2
15    5  to the right of    4
16    5  to the right of   14
17    5               on    3
18    6               on   13
19    7  to the right of    2
20    8   to the left of    3
21    9   to the left of    3
22    9               on   14
23   11   to the left of    3
24   12               on    4
25   12   to the left of    2
26   14   to the left of    3
27   14   to the left of    5