Question: What are the four main types of taste buds on the tongue?
Answer: sour
bitter
sweet
salty
Disambiguated annotations:
answer: Circumvallate
Fungiform
Filiform
Fungiform papillae, Foliate papillae, Circumvallate papillae, and Filiform papillae
Circumvallate papillae
Foliate papillae
Fungiform papillae
Foliate
Filiform papillae