Table:
Jeffrey Dahmer

Victims	17

Span of crimes

June 18, 1978–July 19, 1991
Country	United States
State(s)	Ohio, Wisconsin

Date apprehended

July 22, 1991
Imprisoned at	Columbia Correctional Institution

Retrieve the values of cells at the given table positions, indicated by row and column indices. Format each cell value as a JSON, using the structure {"row_id":"m", "column_id":"n", "cell_value":"<Corresponding Cell Value>"}.
Positions to check:
the 3rd row and the 1st column,
the 4th row and the 2nd column,
the 5th row and the 2nd column,
the 4th row and the 1st column,
the 6th row and the 2nd column,

The extracted cell contents are listed below.
{"row_id":"3", "column_id":"1", "cell_value":"Span of crimes"}
{"row_id":"4", "column_id":"2", "cell_value":"United States"}
{"row_id":"5", "column_id":"2", "cell_value":"Ohio, Wisconsin"}
{"row_id":"4", "column_id":"1", "cell_value":"Country"}
{"row_id":"6", "column_id":"2", "cell_value":"July 22, 1991"}