What is on the shelf in the top?
The book is on the shelf.
     src        edge_attr  dst
0      0            above   16
1      0  to the right of   20
2      0  to the right of   11
3      0  to the right of   28
4      0  to the right of   21
..   ...              ...  ...
112   27   to the left of   17
113   27   to the left of   26
114   28               on   17
115   28   to the left of    0
116   28  to the right of   10

[117 rows x 3 columns]