Table:
undergraduate degree
graduate degree

unadjusted gap
adjusted gap
unadjusted gap
adjusted gap

model a
model b
model a
model b

percent

cohort

2006
-1.9
-1.8
-0.6
-5.8
-3.7
1.7

2007
-0.5
0.6
0.7
-15.8
-13.1
-8.2

2008
..
..
..
..
..
..

2009
-7.6
-7.3
-7.8
-9.8
-8.1
-9.4

2010
-7.7
-7.2
-10.0
-13.6
-9.8
-8.4

2011
-10.1
-8.5
-11.1
-3.2
2.1
0.5

Return the values of the cells in the following table postions:
the 5th row and the 1st column,
the 6th row and the 3rd column,
the 8th row and the 1st column,
the 8th row and the 5th column,

Requirements: Format each cell value as a JSON, using the structure {"row_id":"m", "column_id":"n", "cell_value":"<Corresponding Cell Value>"}.

The extracted cell contents are listed below.
{"row_id":"5", "column_id":"1", "cell_value":"cohort"}
{"row_id":"6", "column_id":"3", "cell_value":"-1.8"}
{"row_id":"8", "column_id":"1", "cell_value":"2008"}
{"row_id":"8", "column_id":"5", "cell_value":".."}