What is common to the vase and the leaf?
The color, both the vase and the leaf are green.
    src        edge_attr  dst
0     0  to the right of    5
1     0   to the left of    3
2     0  to the right of    8
3     0  to the right of    7
4     1   to the left of    3
5     1               by    5
6     2  to the right of    8
7     3  to the right of    1
8     3  to the right of    0
9     5   to the left of    0
10    6  to the right of    8
11    7               on    5
12    7   to the left of    0
13    8   to the left of    0
14    8   to the left of    6
15    8   to the left of    2