What is the color of the tennis racket below the tennis ball?
The tennis racket is black.
    src        edge_attr  dst
0     0            below    9
1     2  to the right of   10
2     2  to the right of    3
3     3   to the left of    4
4     3   to the left of    2
5     4  to the right of   10
6     4  to the right of    3
7     6           behind   10
8     9            above    0
9    10          hitting    9
10   10          wearing    5
11   10      in front of    6
12   10          wearing    3
13   10          wearing    7
14   10   to the left of    4
15   10   to the left of    2