What is the cat in front of?
The cat is in front of the book.
    src        edge_attr  dst
0     2   to the left of    9
1     2   to the left of    4
2     3  to the right of    9
3     4  to the right of    2
4     4           behind    6
5     4      in front of   10
6     6      in front of    4
7     7  to the right of    9
8     7   to the left of    8
9     8  to the right of    7
10    9  to the right of    2
11    9   to the left of    7
12    9   to the left of    3
13   10           behind    4