Table:
0
A
B
C
D
E
F
1
Year
Date
Location
Winner
Loser
Weight class
2
2002
May 18, 2002
Uncasville, Connecticut , United States
Micky Ward United States
Arturo Gatti Canada
Welterweight
3
2003
April 26, 2003
Mashantucket, Connecticut , United States
James Toney United States
Vassily Jirov Kazakhstan
Cruiserweight
4
2004
November 27, 2004
Las Vegas , Nevada , United States
Marco Antonio Barrera Mexico
Erik Morales Mexico
Super featherweight
5
2005
May 7, 2005
Las Vegas , Nevada , United States
Diego Corrales United States
José Luis Castillo Mexico
Lightweight
6
2006
March 18, 2006
Levallois-Perret , France
Somsak Sithchatchawal Thailand
Mahyar Monshipour France
Super bantamweight
7
2007
September 29, 2007
Atlantic City , New Jersey , United States
Kelly Pavlik United States
Jermain Taylor United States
Middleweight
8
2008
March 1, 2008
Carson, California , United States
Israel Vázquez Mexico
Rafael Márquez Mexico
Super bantamweight
9
2009
February 28, 2009
Houston, Texas , United States
Juan Manuel Márquez Mexico
Juan Díaz United States
Lightweight
10
2010
December 11, 2010
Las Vegas, Nevada , United States
Amir Khan United Kingdom
Marcos Maidana Argentina
Super lightweight
11
2011
July 15, 2011
New York, New York , United States
Delvin Rodriguez Dominican Republic
Pawel Wolak Poland
Super welterweight
12
2012
December 8, 2012
Las Vegas, Nevada , United States
Juan Manuel Marquez Mexico
Manny Pacquiao Philippines
Welterweight

Questions and formulas:
Question: How many years were lightweight class on february 28, 2009?
Formula: ROWS(FILTER(A1,(F1="lightweight")*(B1="february 28, 2009")))
Formula2: ROWS(FILTER(A2:A12,(F2:F12="lightweight")*(B2:B12="february 28, 2009")))
Level: easy