Table:
0
A
B
C
D
E
F
1
Name
Japanese
Date of designation
Date of reclassification
Region
Prefecture
2
Hakodate
函館
2000-11-01
2005-10-01 ( Core city )
Hokkaido
Hokkaido
3
Shimizu
清水
2001-04-01
2003-04-01 (merge into Shizuoka )
Chūbu
Shizuoka
4
Shimonoseki
下関
2002-04-01
2005-02-12 ( Core city )
Chūgoku
Yamaguchi
5
Morioka
盛岡
2000-11-01
2008-04-01 ( Core city )
Tōhoku
Iwate
6
Kurume
久留米
2001-04-01
2008-04-01 ( Core city )
Kyushu
Fukuoka
7
Maebashi
前橋
2001-04-01
2009-04-01 ( Core city )
Kantō
Gunma
8
Ōtsu
大津
2001-04-01
2009-04-01 ( Core city )
Kansai
Shiga
9
Amagasaki
尼崎
2001-04-01
2009-04-01 ( Core city )
Kansai
Hyōgo
10
Takasaki
高崎
2001-04-01
2011-04-01 ( Core city )
Kantō
Gunma

Questions and formulas:
Question: Name thenames for 2002-04-01
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="2002-04-01"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F10,C2:C10="2002-04-01"),1))
Level: medium
Question: Name all the date of designations for kurume
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="Kurume"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F10,A2:A10="Kurume"),3))
Level: medium
Question: Name the total number of japanese for amagasaki
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="Amagasaki"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F10,A2:A10="Amagasaki"),2))
Level: medium
Question: Name the region for iwate
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,F1="Iwate"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F10,F2:F10="Iwate"),5))
Level: medium