Table:
Event	Begin	End

track meet	11:55 A.M.	1:45 P.M.

golf tournament	1:35 P.M.	2:55 P.M.

gymnastics meet	2:55 P.M.	5:45 P.M.

men's tennis match	4:55 P.M.	7:35 P.M.

women's tennis match	7:10 P.M.	8:30 P.M.

Examine the given table and identify the contents of cells located at specified locations, denoted by row and column indices. Represent each cell value in the JSON format {"row_id":"m", "column_id":"n", "cell_value":"<Corresponding Cell Value>"}. For instance, {"row_id":"5", "column_id":"4", "cell_value":"missouri 4"}.
Specified positions:
row 1 and column 1,
row 1 and column 2,
row 1 and column 3,
row 4 and column 3,
row 6 and column 2,
row 7 and column 1,
row 7 and column 3,
row 7 and column 2,
row 2 and column 1,

The extracted cell contents are listed below.
{"row_id":"1", "column_id":"1", "cell_value":"University sports schedule"}
{"row_id":"1", "column_id":"2", "cell_value":"University sports schedule"}
{"row_id":"1", "column_id":"3", "cell_value":"University sports schedule"}
{"row_id":"4", "column_id":"3", "cell_value":"2:55 P.M."}
{"row_id":"6", "column_id":"2", "cell_value":"4:55 P.M."}
{"row_id":"7", "column_id":"1", "cell_value":"women's tennis match"}
{"row_id":"7", "column_id":"3", "cell_value":"8:30 P.M."}
{"row_id":"7", "column_id":"2", "cell_value":"7:10 P.M."}
{"row_id":"2", "column_id":"1", "cell_value":"Event"}