What color is the vehicle that is in front of the container?
The taxi cab is blue.
    src        edge_attr  dst
0     0               of   10
1     0  to the right of    5
2     0  to the right of   12
3     2   to the left of    9
4     2   on the side of   10
5     2  to the right of    6
6     3               of   10
7     3  to the right of   14
8     3   to the left of    4
9     3   to the left of    9
10    3  to the right of    6
11    4  to the right of    7
12    4           behind    7
13    4  to the right of    3
14    5   to the left of    0
15    5             near   10
16    6               of   10
17    6   to the left of    2
18    6   to the left of    3
19    6   to the left of    8
20    6   to the left of   13
21    7   to the left of    4
22    7   to the left of    9
23    7   to the left of    8
24    7      in front of    4
25    8  to the right of    6
26    8  to the right of    7
27    9               of    8
28    9  to the right of    7
29    9  to the right of    3
30    9  to the right of    2
31   10             near   11
32   10             near    5
33   11          next to   10
34   12  on the front of   10
35   12   to the left of    0
36   13  to the right of    6
37   14   to the left of    3
38   14  on the front of   10