Table:
0
A
B
C
D
E
1
Name
Martyred
Place
Beatified
Canonised
2
Laurent-Marie-Joseph Imbert / St. Imbert
1839
Korea
1925
1984
3
Jacques-Honoré Chastan / St. Chastan
1839
Korea
1925
1984
4
Philip Minh Van Doan / St. Philip Minh
1853
Annam
1900
1988
5
Peter Quy Cong Doan / St. Peter Quy
1859
Annam
1909
1988
6
Paul Loc Le Van / St. Paul Loc
1859
Annam
1909
1988
7
John Hoan Trinh Doan / St. John Hoan
1861
Annam
1909
1988
8
Joseph Luu Van Nguyen / St. Joseph Luu
1861
Annam
1909
1988

Questions and formulas:
Question: When was the first beatification in Korea that was canonised before 1984?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(C1="korea")*(E1<1984)),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E8,(C2:C8="korea")*(E2:E8<1984)),4))
Level: medium
Question: When was Laurent-Marie-Joseph Imbert / St. Imbert, who was beatified after 1909 and canonised after 1984, martyred?
Formula: SUM(FILTER(B1, (D1>1909)*(A1="laurent-marie-joseph imbert / st. imbert")*(E1>1984)))
Formula2: SUM(FILTER(B2:B8, (D2:D8>1909)*(A2:A8="laurent-marie-joseph imbert / st. imbert")*(E2:E8>1984)))
Level: easy
Question: When was the person(s) who were canonised before 1988 beatified?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1<1988),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E8,E2:E8<1988),4))
Level: medium
Question: When was John Hoan Trinh Doan / St. John Hoan, who was beatified in 1909 and canonised after 1988, martyred?
Formula: SUM(FILTER(B1, (D1=1909)*(A1="john hoan trinh doan / st. john hoan")*(E1>1988)))
Formula2: SUM(FILTER(B2:B8, (D2:D8=1909)*(A2:A8="john hoan trinh doan / st. john hoan")*(E2:E8>1988)))
Level: easy