Table:
0
A
B
C
D
E
1
Entered office as Head of State or Government
Began time as senior G8 leader
Ended time as senior G8 leader
Person
Office
2
16 October 1964
15 November 1975
5 April 1976
Harold Wilson
Prime Minister of the United Kingdom
3
16 May 1974
5 April 1976
27 June 1976
Helmut Schmidt
Chancellor of West Germany
4
20 April 1968
27 June 1976
4 June 1979
Pierre Trudeau
Prime Minister of Canada
5
16 May 1974
4 June 1979
1 October 1982
Helmut Schmidt
Chancellor of West Germany
6
4 May 1979
1 October 1982
28 November 1990
Margaret Thatcher
Prime Minister of the United Kingdom
7
10 May 1981
28 November 1990
17 May 1995
François Mitterrand
President of France
8
1 October 1982
17 May 1995
27 October 1998
Helmut Kohl
Chancellor of Germany
9
10 July 1991
27 October 1998
31 December 1999
Boris Yeltsin
President of Russia
10
20 January 1993
31 December 1999
20 January 2001
Bill Clinton
President of the United States
11
4 November 1993
20 January 2001
12 December 2003
Jean Chrétien
Prime Minister of Canada
12
17 May 1995
12 December 2003
16 May 2007
Jacques Chirac
President of France
13
2 May 1997
16 May 2007
27 June 2007
Tony Blair
Prime Minister of the United Kingdom
14
31 December 1999
27 June 2007
7 May 2008
Vladimir Putin
President of Russia
15
20 January 2001
7 May 2008
20 January 2009
George W. Bush
President of the United States
16
10 May 1994
20 January 2009
16 November 2011
Silvio Berlusconi
Prime Minister of Italy
17
22 November 2005
16 November 2011
7 May 2012
Angela Merkel
Chancellor of Germany

Questions and formulas:
Question: When did Jacques Chirac stop being a G8 leader?
Formula: FILTER(C1,D1="Jacques Chirac")
Formula2: FILTER(C2:C17,D2:D17="Jacques Chirac")
Level: easy
Question: When did the Prime Minister of Italy take office?
Formula: FILTER(A1,E1="Prime Minister of Italy")
Formula2: FILTER(A2:A17,E2:E17="Prime Minister of Italy")
Level: easy