Table:
0
A
B
C
D
E
1
Name
Type
Entered service
Water depth
Location
2
Deepwater Navigator
ship
2000
ft (m)
Brazil
3
Discoverer 534
ship
1975/1991
ft (m)
India
4
Discoverer Seven Seas
ship
1976/1997
ft (m)
India
5
GSF Celtic Sea
semi
1982/1998
ft (m)
Angola
6
Jack Bates
semi
1986/1997
ft (m)
Australia
7
Jim Cunningham
semi
1982/1995
ft (m)
Angola
8
M.G. Hulme, Jr.
semi
1983/1996
ft (m)
India
9
Sedco 702
semi
1973/2007
ft (m)
Nigeria
10
Sedco 706
semi
1976/1994/ 2008
ft (m)
Brazil
11
Sedco 707
semi
1976/1997
ft (m)
Brazil
12
Sedco 709
semi
1977/1999
ft (m)
Malaysia
13
Sedco 710
semi
1983
ft (m)
Brazil
14
Sovereign Explorer
semi
1984
ft (m)
Brazil
15
Transocean Marianas
semi
1979/1998
ft (m)
NIgeria
16
Transocean Rather
semi
1988
ft (m)
Angola
17
Transocean Richardson
semi
1988
ft (m)
Angola

Questions and formulas:
Question: Which is located in Angola and entered service in 1988?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(E1="angola")*(C1="1988")),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E17,(E2:E17="angola")*(C2:C17="1988")),1))
Level: medium
Question: What type entered service in 2000?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="2000"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E17,C2:C17="2000"),2))
Level: medium
Question: What is the water depth of Sedco 702, located in Nigeria?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(E1="nigeria")*(A1="sedco 702")),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E17,(E2:E17="nigeria")*(A2:A17="sedco 702")),4))
Level: medium
Question: Which is located in Nigeria?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="nigeria"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E17,E2:E17="nigeria"),1))
Level: medium
Question: Which type entered service in 1976/1997 and is located in Brazil?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(E1="brazil")*(C1="1976/1997")),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E17,(E2:E17="brazil")*(C2:C17="1976/1997")),2))
Level: medium
Question: Where is Transocean Richardson, a semi entered into service in 1988?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(B1="semi")*(C1="1988")*(A1="transocean richardson")),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E17,(B2:B17="semi")*(C2:C17="1988")*(A2:A17="transocean richardson")),5))
Level: medium