Table:
0
A
B
C
D
E
1
Representative
Title
Presentation of Credentials
Termination of Mission
Appointed by
2
Malcolm R. Barnebey
Chargé d'Affaires ad interim
October 29, 1981
June 23, 1983
Ronald Reagan
3
Malcolm R. Barnebey
Ambassador Extraordinary and Plenipotentiary
June 23, 1983
July 10, 1985
Ronald Reagan
4
Keith Guthrie
Chargé d'Affaires ad interim
July 1985
September 1987
Ronald Reagan
5
Robert G. Rich, Jr.
Ambassador Extraordinary and Plenipotentiary
September 14, 1987
July 7, 1990
Ronald Reagan
6
Eugene L. Scassa
Ambassador Extraordinary and Plenipotentiary
November 22, 1990
July 6, 1994
George H. W. Bush
7
George Charles Bruno
Ambassador Extraordinary and Plenipotentiary
August 29, 1994
November 25, 1997
Bill Clinton
8
Carolyn Curiel
Ambassador Extraordinary and Plenipotentiary
January 19, 1998
March 1, 2001
Bill Clinton
9
Russell F. Freeman
Ambassador Extraordinary and Plenipotentiary
September 11, 2001
April 7, 2005
George W. Bush
10
Robert Johann Dieter
Ambassador Extraordinary and Plenipotentiary
September 8, 2005
June 10, 2009
George W. Bush
11
Vinai Thummalapally
Ambassador Extraordinary and Plenipotentiary
June 12, 2009
Current
Barack Obama

Questions and formulas:
Question: Which Title has a Termination of Mission of current?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="current"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E11,D2:D11="current"),2))
Level: medium
Question: Which Appointed has Termination of Mission on april 7, 2005?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="april 7, 2005"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E11,D2:D11="april 7, 2005"),5))
Level: medium
Question: Which Appointed has a Presentation of Credentials on November 22, 1990
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="november 22, 1990"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E11,C2:C11="november 22, 1990"),5))
Level: medium
Question: Which Representative has a Presentation of Credentials on september 8, 2005?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="september 8, 2005"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E11,C2:C11="september 8, 2005"),1))
Level: medium
Question: Which Termination of Mission has a Presentation of Credentials on October 29, 1981
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="october 29, 1981"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E11,C2:C11="october 29, 1981"),4))
Level: medium