Table:
0
A
B
C
D
E
1
Date
Company
Business
Country
Value ( USD )
2
Unknown
Celerity Energy Partners San Diego LLC
Energy
United States
Unknown
3
2009
Cogent Energy, Inc.
Green Building
United States
Unknown
4
Unknown
ENOC Securities Corporation
Securities
United States
Unknown
5
Unknown
EnerNOC Ltd.
Energy
Canada
Unknown
6
Unknown
EnerNOC UK Limited
Energy
United Kingdom
Unknown
7
Unknown
Mdenergy, LLC
Energy
United States
Unknown
8
Unknown
Pinpoint Power DR LLC
Energy
United States
Unknown
9
Unknown
South River Consulting, LLC
Energy
United States
Unknown
10
Unknown
Global Energy Partners, Inc.
Energy
United States
Unknown
11
2011
M2M Communications Corporation
Energy
United States
Unknown
12
Unknown
EnerNOC Australia Pty Ltd
Energy
Australia
Unknown
13
Unknown
DMT Energy Pty Ltd
Energy
Australia
Unknown
14
Unknown
Energy Response Holdings Pty Ltd
Energy
Australia
Unknown
15
Unknown
EnerNOC Pty Ltd
Energy
Australia
Unknown
16
Unknown
EnerNOC New Zealand Limited
Energy
New Zealand
Unknown
17
Unknown
High Street Corporation Pty Ltd
Energy
Australia
Unknown

Questions and formulas:
Question: In New Zealand, what's the value that has an unknown date and is an energy business?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(A1="unknown")*(C1="energy")*(D1="new zealand")),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E17,(A2:A17="unknown")*(C2:C17="energy")*(D2:D17="new zealand")),5))
Level: medium
Question: What company has an unknown date and is an energy business?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(C1="energy")*(A1="unknown")),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E17,(C2:C17="energy")*(A2:A17="unknown")),2))
Level: medium
Question: In the United Kingdom, what company has an unknown date and is an energy business?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(C1="energy")*(A1="unknown")*(D1="united kingdom")),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E17,(C2:C17="energy")*(A2:A17="unknown")*(D2:D17="united kingdom")),2))
Level: medium
Question: For the United Kingdom, what's the date?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="united kingdom"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E17,D2:D17="united kingdom"),1))
Level: medium
Question: For the Enernoc Australia Pty Ltd, what's the country with an unknown date?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(A1="unknown")*(B1="enernoc australia pty ltd")),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E17,(A2:A17="unknown")*(B2:B17="enernoc australia pty ltd")),4))
Level: medium