Which color is the cat that is wearing a collar?
The cat is gray.
    src        edge_attr  dst
0     0   to the left of    9
1     0  to the right of    6
2     0   to the left of    5
3     0   to the left of    7
4     1               by    9
5     1           beside    9
6     1   to the left of   14
7     1  to the right of   13
8     1   to the left of    4
9     1   to the left of   11
10    3   to the left of    7
11    4  to the right of    9
12    4  to the right of   10
13    4  to the right of    1
14    5  to the right of    0
15    5   to the left of   10
16    5   to the left of   12
17    6   to the left of    0
18    6   to the left of    9
19    7   to the left of   10
20    7  to the right of    3
21    7  to the right of    0
22    9  to the right of    0
23    9   to the left of    4
24    9  to the right of    6
25    9   to the left of   12
26    9               by    1
27   10               by    9
28   10  to the right of    7
29   10  to the right of    5
30   10   to the left of    4
31   10   to the left of   12
32   10  to the right of   13
33   11  to the right of    1
34   11               in   15
35   12  to the right of    9
36   12  to the right of   10
37   12  to the right of    5
38   13   to the left of    1
39   13               by    9
40   13          wearing    7
41   13             with    7
42   13   to the left of   10
43   14  to the right of    1