What is the person using?
The person is using a telephone.
    src        edge_attr  dst
0     0   to the left of    6
1     0   to the left of    7
2     1   to the left of    7
3     2   to the left of    6
4     4            using    5
5     4        typing on    5
6     4       looking at    5
7     5   to the left of    6
8     5   to the left of    7
9     6  to the right of    2
10    6  to the right of    5
11    6  to the right of    8
12    6  to the right of    0
13    7  to the right of    5
14    7  to the right of    0
15    7  to the right of    8
16    7  to the right of    1
17    8   to the left of    7
18    8   to the left of    6