Question: When was the first world war broke out?
Answer: 28 July 1914
Disambiguated annotations:
qaPairs: question: When was the first world war broke out as measured by when Gavrilo Princip was assassinated?
answer: 28 June 1914
question: When was the first world war broke out as measured by when Austria-Hungary first shelled Belgrade?
answer: 28 July 1914