Table:
0
A
B
C
D
E
1
Concept
Location
First year
Last year
Number of editions
2
'91-'92
Hemkade 48 Zaandam
2000
2001
5
3
Club Q-BASE
Hemkade 48 Zaandam
2002
2002
23
4
Hardcore Resurrection
Various locations
2000
2003
4
5
Teqnology
Heineken Music Hall Amsterdam
2002
2004
6
6
Qlubtempo
Hemkade 48 Zaandam / Heineken Music Hall Amsterdam
2001
2007
31
7
QrimeTime
Heineken Music Hall Amsterdam
2004
2007
4
8
In Qontrol
RAI Amsterdam
2004
2010
7
9
Houseqlassics
Various locations
1999
2010
18

Questions and formulas:
Question: Which locations had their first year in 2001? 
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1=2001),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E9,C2:C9=2001),2))
Level: medium
Question: How many editions did Club Q-base concept have ? 
Formula: SUMIFS(E1,A1,"Club Q-BASE")
Formula2: SUMIFS(E2:E9,A2:A9,"Club Q-BASE")
Level: easy