Table:
Time

Wind

Auto

Athlete

Nationality

Location of race

Date

20.6y

Andy Stanfield

United States

Philadelphia, United States

May 26, 1951[2]

20.6

Andy Stanfield

United States

Los Angeles, United States

June 28, 1952[2]

20.6

0.0

Thane Baker

United States

Bakersfield, United States

June 23, 1956[2]

20.6

20.75

Bobby Morrow

United States

Melbourne, Australia

November 27, 1956[2]

20.6

Manfred Germar

West Germany

Wuppertal, Germany

October 1, 1958[2]

20.6y

−1.6

Ray Norton

United States

Berkeley, United States

March 19, 1960[2]

20.6

Ray Norton

United States

Philadelphia, United States

April 30, 1960[2]

20.5y

Peter Radford

United Kingdom

Wolverhampton, United Kingdom

May 28, 1960[2]

20.5

0.0

20.75

Stone Johnson

United States

Stanford, United States

July 2, 1960[2]

20.5

0.0

Ray Norton

United States

Stanford, United States

July 2, 1960[2]

20.5

20.65

Livio Berruti

Italy

Rome, Italy

September 3, 1960[2]

20.5

20.62

Livio Berruti

Italy

Rome, Italy

September 3, 1960[2]

20.5y

−1.1

20.67

Paul Drayton

United States

Walnut, United States

June 23, 1962[2]

20.3y

−0.1

Henry Carr

United States

Tempe, United States

March 23, 1963[2]

20.2y

0.5

Henry Carr

United States

Tempe, United States

April 4, 1964[2]

20.0y

0.0

Tommie Smith

United States

Sacramento, United States

June 11, 1968[2]

19.8A

0.9

19.83A

Tommie Smith

United States

Mexico City, Mexico

October 16, 1968[2]

19.8A

0.9

19.86A

Donald Quarrie

Jamaica

Cali, Colombia

August 3, 1971[2]

19.8+

1.3

Donald Quarrie

Jamaica

Eugene, Oregon, United States

June 7, 1975[2]

For the shown table, how many rows and columns are there? The final result should be presented in the JSON format of {"row_number": "m", "column_number": "n"}.

There are 20 rows and 7 columns in the table. So, the final answer is {"row_number": "20", "column_number": "7"}.