Context: In Central Catalan, unstressed vowels reduce to three: /a e ɛ/ > [ə]; /o ɔ u/ > [u]; /i/ remains distinct. The other dialects have different vowel reduction processes (see the section pronunciation of dialects in this article).

Question: How many  reduced unstressed are vowels are there in Central Catalan?
Answer: three

Question: What vowel stays distinct?
Answer: /i/

Question: What kind of vowel processes do other dialects have?
Answer: different

Question: Where do you find dialectic vowel reductions?
Answer: section pronunciation