Is the man to the right or to the left of the boy that is on the left?
The man is to the right of the boy.
    src        edge_attr  dst
0     2         sniffing    5
1     2   to the left of    5
2     2   to the left of    9
3     4   to the left of    5
4     5  to the right of    2
5     5   to the left of    7
6     5  to the right of    4
7     6   to the left of    9
8     7  to the right of    5
9     9          petting    5
10    9             with    7
11    9  to the right of    2
12    9  to the right of    6
13   10               on    5