Are the curtains to the left or to the right of the lamp?
The curtains are to the left of the lamp.
     src        edge_attr  dst
0      0   to the left of   11
1      0  to the right of    1
2      0   to the left of   26
3      1   to the left of   15
4      1   to the left of   17
..   ...              ...  ...
136   26  to the right of   15
137   27   to the left of   26
138   27   to the left of   15
139   27   to the left of   17
140   27  to the right of    4

[141 rows x 3 columns]