Table:
0
A
B
C
D
E
F
1
Name
Status
Authors
Unit
Location
Notes
2
Apsaravis
Valid
Norell Clarke
Djadokhta Formation
Mongolia
The type species is Apsaravis ukhaana.
3
Limenavis
Valid
Clarke Chiappe
Allen Formation
Argentina
The type species is Limenavis patagonica.
4
Longipteryx
Valid
Zhang Zhou Hou Gu
Jiufotang Formation
China
The type species is Longipteryx chaoyangensis.
5
Yanornis
Valid
Zhou Zhang
Jiufotang Formation
China
The type species is Yanornis martini.
6
Yixianornis
Valid
Zhou Zhang
Jiufotang Formation
China
The type species is Yixianornis grabaui.

Questions and formulas:
Question: What unit is in Mongolia?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,E1="mongolia"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,E2:E6="mongolia"),4))
Level: medium
Question: What unit is in Argentina?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,E1="argentina"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,E2:E6="argentina"),4))
Level: medium
Question: What name is located in China?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,E1="china"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,E2:E6="china"),1))
Level: medium
Question: What unit is located in China and has Zhou Zhang as an author?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,(E1="china")*(C1="zhou zhang")),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,(E2:E6="china")*(C2:C6="zhou zhang")),4))
Level: medium