What color is the rug the shoe is on?
The rug is gray.
    src        edge_attr  dst
0     4   to the left of   15
1     5          wearing   11
2     5          wearing    1
3     5          holding   10
4     5          wearing   13
5     5          wearing   12
6     5          wearing    9
7     5               on    8
8     5          wearing    2
9     5          wearing    7
10   10   to the left of   14
11   12               on   16
12   13               on   16
13   14  to the right of   10
14   15  to the right of    4