What is the person holding?
The person is holding the telephone.
   src        edge_attr  dst
0    1   to the left of    2
1    1   to the left of    6
2    1   to the left of    4
3    2  to the right of    1
4    3            below    7
5    4  to the right of    1
6    6  to the right of    1
7    7          holding    6