Table: snake_species
Columns: species
common_name
trinidad
tobago
bocas_is
other

Question: there are in tobago species name helicops angulatus
SQL: SELECT "tobago" FROM snake_species WHERE "species" = 'Helicops angulatus'

Question: are in tobago species liophis cobellus cobellus?
SQL: SELECT "tobago" FROM snake_species WHERE "species" = 'Liophis cobellus cobellus'