What color are the trousers?
The trousers are black.
    src        edge_attr  dst
0     0               of    9
1     1      in front of    9
2     2  to the right of   12
3     2  to the right of   15
4     2  to the right of   14
5     4  to the right of    5
6     5   to the left of   17
7     5   to the left of    4
8     5         covering    7
9     7       covered by    5
10    8               of   14
11    9           behind    1
12    9  to the right of   10
13   10   to the left of    9
14   10   to the left of   15
15   11               of   11
16   12   to the left of    2
17   13          wearing   16
18   13  to the right of   14
19   13  to the right of   15
20   14          wearing    3
21   14   to the left of   13
22   14   to the left of    2
23   15  to the right of   10
24   15   to the left of    2
25   15   to the left of   13
26   17  to the right of    5