Is the screen to the right of a book?
No, the screen is to the right of an apple.
    src        edge_attr  dst
0     0   to the left of    7
1     0   to the left of    2
2     0  to the right of    1
3     0  to the right of    3
4     1   to the left of    5
5     1   to the left of    0
6     2  to the right of    4
7     2  to the right of    0
8     2  to the right of    5
9     2   to the left of    6
10    3   to the left of    5
11    3   to the left of    0
12    4   to the left of    2
13    5  to the right of    1
14    5   to the left of    2
15    5  to the right of    3
16    5   to the left of    7
17    6  to the right of    2
18    7  to the right of    5
19    7  to the right of    0