Is the side walk near the grass made of cobblestone or concrete?
The side walk is made of concrete.
    src        edge_attr  dst
0     0             near    8
1     0   to the left of    5
2     2   to the left of    9
3     2   to the left of    5
4     2   to the left of    3
5     3  to the right of    2
6     3  to the right of   14
7     3  to the right of   13
8     3  to the right of   15
9     3   to the left of   11
10    3  to the right of    9
11    3  to the right of    5
12    4   to the left of   16
13    5   to the left of   10
14    5   to the left of   11
15    5  to the right of   13
16    5  to the right of   15
17    5   to the left of   16
18    5  to the right of    2
19    5  to the right of    0
20    5  to the right of    6
21    5   to the left of    3
22    5  to the right of    7
23    6  to the right of   12
24    6   to the left of   14
25    6   to the left of    5
26    6   to the left of    9
27    7   to the left of    5
28    8             near    0
29    9  to the right of   13
30    9   to the left of   11
31    9  to the right of    6
32    9   to the left of    3
33    9  to the right of    2
34   10  to the right of    5
35   11  to the right of    3
36   11  to the right of    5
37   11  to the right of    9
38   12   to the left of    6
39   13   to the left of    5
40   13   to the left of    9
41   13   to the left of    3
42   14  to the right of    6
43   14   to the left of    3
44   15   to the left of    5
45   15   to the left of    3
46   16  to the right of    5
47   16  to the right of    4