Table:
FM radio stations

Frequency
Call sign
Name
Format
Owner
Target city/market
City of license

89.7 FM
KUSD
South Dakota Public Broadcasting
NPR
SD Board of Directors for Educational Telecommunications
Yankton/Vermillion
Vermillion

93.1 FM
KKYA
KK93
Country
Riverfront Broadcasting LLC
Yankton/Vermillion
Yankton

94.3 FM
KDAM
The Dam
Mainstream Rock
Riverfront Broadcasting LLC
Yankton/Vermillion
Hartington

104.1 FM
WNAX-FM
The Wolf 104.1
Country
Saga Communications
Yankton/Vermillion
Yankton

106.3 FM
KVHT
Classic Hits 106.3
Classic Hits
Cullhane Communications, Inc.
Yankton/Vermillion
Vermillion

Considerding the provided table image, extract the cells' values in the following postions:
the 3rd row and the 5th column
the 4th row and the 1st column
the 2nd row and the 4th column

Output each cell content as JSON in the format {"row_id":"m", "column_id":"n", "cell_value":"<Corresponding Cell Value>"}.

The target cell values are as follows:
{"row_id":"3", "column_id":"5", "cell_value":"Riverfront Broadcasting LLC"}
{"row_id":"4", "column_id":"1", "cell_value":"94.3 FM"}
{"row_id":"2", "column_id":"4", "cell_value":"NPR"}