What is in front of the cat which is to the left of the book?
The blanket is in front of the cat.
   src        edge_attr  dst
0    2      in front of    5
1    3  to the right of    4
2    3  to the right of    5
3    4   to the left of    6
4    4   to the left of    3
5    5   to the left of    3
6    5           behind    2
7    6  to the right of    4