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