Table:
0
A
B
C
1
template type code
template type description
reference template types
2
PPT
Presentation
3
CV
CV
4
AD
Advertisement
5
PP
Paper
6
BK
Book

Questions and formulas:
Question: the description of AD
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:C1,A1="ad"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:C6,A2:A6="ad"),2))
Level: medium
Question: What's the description of template AD?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:C1,A1="ad"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:C6,A2:A6="ad"),2))
Level: medium
Question: the template type of book
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:C1,B1="book"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:C6,B2:B6="book"),1))
Level: medium
Question: The type code described as book.
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:C1,B1="book"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:C6,B2:B6="book"),1))
Level: medium