Is the umpire behind the person in the center of the picture?
Yes, the umpire is behind the catcher.
    src        edge_attr  dst
0     0               on   12
1     0  to the right of   18
2     0   to the left of    2
3     1   to the left of   17
4     1               on   12
5     1  to the right of    7
6     1  to the right of   12
7     1   to the left of   15
8     2  to the right of   14
9     2      in front of    3
10    2  to the right of   18
11    2  to the right of    0
12    3  to the right of    4
13    3   to the left of   19
14    3  to the right of   10
15    4   to the left of    3
16    4               on   10
17    7   to the left of   12
18    7   to the left of    1
19    7   to the left of   15
20    7               on   12
21    8   to the left of   14
22    8   to the left of   18
23   10  to the right of   11
24   10   to the left of    3
25   11   to the left of   10
26   12  to the right of    7
27   12   to the left of    1
28   12   to the left of   15
29   12   to the left of   17
30   13   to the left of   15
31   14   to the left of    2
32   14  to the right of    8
33   15      in front of   18
34   15  to the right of    7
35   15  to the right of    1
36   15  to the right of   12
37   15  to the right of   13
38   15               on   17
39   17  to the right of    1
40   17  to the right of   12
41   18   to the left of    2
42   18   to the left of    0
43   18           behind   15
44   18  to the right of    8
45   19  to the right of    3