What is common to the knife and the spoon?
The color, both the knife and the spoon are black.
    src        edge_attr  dst
0     0   to the left of   15
1     0  to the right of    9
2     2   to the left of   13
3     2  to the right of    9
4     3        on top of    1
5     3  to the right of    7
6     3          next to    4
7     3             near    4
8     3  to the right of    4
9     4   to the left of    3
10    4             near    3
11    6   to the left of   12
12    6   to the left of    8
13    7   to the left of    3
14    8  to the right of    6
15    9   to the left of   15
16    9   to the left of   12
17    9        on top of    1
18    9   to the left of    2
19    9   to the left of    0
20   10  to the right of   14
21   12  to the right of    6
22   12  to the right of    9
23   13  to the right of    2
24   14   to the left of   10
25   14   to the left of   15
26   15  to the right of   14
27   15  to the right of    9
28   15  to the right of    0