What are the people below the clouds holding?
The people are holding the surfboard.
    src        edge_attr  dst
0     0             near    3
1     1               on    3
2     1   to the left of    7
3     2          holding   10
4     2         carrying   10
5     2               on    3
6     2            below    4
7     3             near    8
8     3             near    0
9     4               in    6
10    4      in front of   11
11    5               on    3
12    7               on    3
13    7  to the right of    1
14    8             near    3
15    8               by    2
16   11           behind    4
17   11               in    6