What is sitting on the desk?
The lamp is sitting on the desk.
    src        edge_attr  dst
0     1  to the right of    7
1     1  to the right of    6
2     2       sitting on    4
3     2   to the left of    6
4     2   to the left of    3
5     3  to the right of    2
6     4             near    6
7     5  to the right of    9
8     5   to the left of   10
9     5   to the left of    6
10    6             near    4
11    6          next to    4
12    6  to the right of    2
13    6   to the left of    1
14    6  to the right of    8
15    6  to the right of    5
16    7   to the left of    1
17    8   to the left of    6
18    9   to the left of    5
19   10  to the right of    5