Is the phone to the left or to the right of the lamp?
The phone is to the right of the lamp.
    src        edge_attr  dst
0     1  to the right of    4
1     1  to the right of    3
2     2               on    0
3     2  to the right of    6
4     3  to the right of    6
5     3   to the left of    5
6     3   to the left of    1
7     4   to the left of    5
8     4   to the left of    1
9     5  to the right of    6
10    5  to the right of    4
11    5  to the right of    3
12    6   to the left of    2
13    6   to the left of    5
14    6   to the left of    3