Is the red book to the right or to the left of the clock?
The book is to the left of the clock.
   src        edge_attr  dst
0    1   to the left of    2
1    1   to the left of    5
2    1   to the left of    3
3    2      draped over    0
4    2  to the right of    1
5    3  to the right of    1
6    4               on    0
7    5  to the right of    1