The people that are walking are playing in what?
The people are playing in the sand.
    src        edge_attr  dst
0     1               in    0
1     2               on    3
2     3             near    6
3     4               on    5
4     4   to the left of   10
5     4       walking up    5
6     5   to the left of   12
7     5   to the left of   11
8     6             near    3
9     6   to the left of   11
10    6   to the left of   12
11    7   to the left of   12
12    7   to the left of   11
13    7               on    3
14    7    standing near    6
15    7               in    6
16    8               in    2
17    8               on    5
18    9   to the left of   10
19   10  to the right of    4
20   10               in    0
21   10  to the right of    9
22   11  to the right of    5
23   11  to the right of    6
24   11  to the right of    7
25   12  to the right of    5
26   12  to the right of    7
27   12  to the right of    6
28   12               on    3
29   12       playing in    2