Conversation so far:
When was Julian Assange born?
Julian Assange was born on July 3, 1971.
Where was Julian Assange born on July 3, 1971?
Julian Assange was born Julian Paul Hawkins on 3 July 1971 in Townsville, Queensland.
What other countries if any did Julian Assange visit?
Julian Assange travelled continuously on WikiLeaks business, visiting Africa, Asia, Europe and North America.
What did Julian Assange do before adulthood?

Question: How many siblings if any did he have?
Self-contained rewrite: How many siblings if any did Julian Assange have?