Conversation so far:
What language did the Sinhalese people use?
Sinhalese people speak Sinhala, also known as Helabasa
Is Helabasa a widely known language?
Halabasa is primarily spoken by the Sinhalese people of Sri Lanka, who make up the largest ethnic group on the island, numbering about 16 million.

Question: Are there any other interesting aspects about this article?
Self-contained rewrite: Are there any other interesting aspects about Helabasa the Sinalese language besides being primarily spoken by people in Sri Lanka?