Table:
0
A
B
C
D
E
F
1
Species
Common name
Trinidad
Tobago
Bocas Is.
Other
2
Helicops angulatus
Water mapepire, brown-banded water snake
Yes
No
No
No
3
Hydrops triangularis neglectus
Water coral
Yes
No
No
No
4
Liophis cobellus cobellus
Mangrove snake, mangrove mapepire
Yes
No
No
No
5
Liophis reginae zweifeli
High wods coral
Yes Boos (2001), p. 100
Yes
No
No
6
Oxyrhopus petola petola
False coral
Yes Boos (2001), p. 102
Yes
No
No
7
Siphlophis cervinus
Checkerbelly
Yes
No
No
No
8
Thamnodynastes ramonriveroi
Striped swamp snake
Yes
No
No
No

Questions and formulas:
Question: there are in tobago species name helicops angulatus
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="Helicops angulatus"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F8,A2:A8="Helicops angulatus"),4))
Level: medium
Question: are in tobago species liophis cobellus cobellus?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="Liophis cobellus cobellus"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F8,A2:A8="Liophis cobellus cobellus"),4))
Level: medium