Table:
0
A
B
C
D
E
1
Perpetrator
Year
Location
Country
Killed
2
Unek, William
1954 1957
Mahagi Malampaka
Belgian Congo Tanganyika
21 36
3
Komakech, Richard
1994
Kampala
Uganda
26
4
Unknown
1994
Ta'izz
Yemen
22
5
Unknown Police Officer
1983
Asureti
Uganda
21
6
Omar Abdul Razeq Abdullah Rifai , 28
2013
Meet al-Attar
Egypt
15
7
Kz
1959.9
Bz
Kz
100.9
8
Unknown Soldier
1995
Nshili
Rwanda
14–17
9
Two Unknown Men
1936
Aksum
Turkey
14
10
Khumalo, Banda, 38
1977
Bulawayo
Rhodesia
13
11
Ogwang, Alfred , 28
1994
Kamwenge
Uganda
13
12
Fekadu Nasha
2013
Bahir Dar
Ethiopia
12–18
13
Oz
1994.9
Kz
Tz
100.9
14
Mogo
1929
Kitale
Kenya
12
15
Obwara, Lazaro , 55
1950
Kampala
Uganda
12
16
Ben Jebir, 28
1985
Fahs
Tunisia
12
17
Vukwana, Bulelani , 29
2002
East London
South Africa
11
18
Abdullah Saleh Zaid al-Kohali, 26
2008
Bait al-Aqari
Yemen
10

Questions and formulas:
Question: What is the location for Egypt in 2013?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(B1=2013)*(D1="egypt")),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E18,(B2:B18=2013)*(D2:D18="egypt")),3))
Level: medium
Question: What is the location for Yemen in 1994?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(B1=1994)*(D1="yemen")),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E18,(B2:B18=1994)*(D2:D18="yemen")),3))
Level: medium
Question: What year is the location Ta'izz?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="ta'izz"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E18,C2:C18="ta'izz"),2))
Level: medium
Question: Which location is in the Belgian Congo Tanganyika?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="belgian congo tanganyika"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E18,D2:D18="belgian congo tanganyika"),3))
Level: medium
Question: Who is the perpetrator in Bait Al-Aqari?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="bait al-aqari"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E18,C2:C18="bait al-aqari"),1))
Level: medium
Question: Who is the perpetrator in Uganda who killed 12 in Kampala?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(D1="uganda")*(C1="kampala")*(E1=12)),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E18,(D2:D18="uganda")*(C2:C18="kampala")*(E2:E18=12)),1))
Level: medium