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

Given a task involving a table image, your goal is to pinpoint the positions of specified cells. Format each cell's location as JSON in the format {'value': '<cell value>', 'location': (row_id, column_id)}, with both row and column id starting from 1. Should a cell be absent in the table, denote its location as 'DOES NOT EXIST'.
Refer to the cell values provided below:
1. 'KVHT'
2. 'Call sign'
3. 'Owner'
4. 'KUSD'
5. 'Mainstream Rock'
6. '41.4'
7. '89.7 FM'
8. 'KDAM'

The coordinates of target cells are listed below.
1. {'value': 'KVHT', 'location': (6, 2)}
2. {'value': 'Call sign', 'location': (1, 2)}
3. {'value': 'Owner', 'location': (1, 5)}
4. {'value': 'KUSD', 'location': (2, 2)}
5. {'value': 'Mainstream Rock', 'location': (4, 4)}
6. {'value': '41.4', 'location': 'DOES NOT EXIST'}
7. {'value': '89.7 FM', 'location': (2, 1)}
8. {'value': 'KDAM', 'location': (4, 2)}