Conversation so far:
What is the religion of the Sinhalese people ?
The form of Buddhism in Sri Lanka is known as Theravada.
How many of the Sinhalese people are Buddhists ?
In 1988 almost 93% of the Sinhala speaking population in Sri Lanka were Buddhist.

Question: For the remaining 7%, What religions do Sinhalese people also believe in ?
Self-contained rewrite: For the remaining 7%, What religions do Sinhalese people also believe in besides Theravada buddhism?