What is the color of the shoes?
The shoes are gray.
    src        edge_attr  dst
0     1  to the right of    3
1     1  to the right of    2
2     2             near    7
3     2   to the left of    3
4     2   to the left of    1
5     3  to the right of    2
6     3   to the left of    1
7     4   to the left of    5
8     5  to the right of    4
9     7               on    2
10    7            using    2
11    7          wearing    4
12    7             near    2
13    7          wearing    0