Question: Sir John Oldcastle, was an English Lollard leader, he escaped from which historic castle located on the north bank of the River Thames in central London, and it lies within the London Borough of Tower Hamlets?
Facts:
John Oldcastle escaped from the Tower of London.
The Tower of London lies within the London Borough of Tower Hamlets.
Tower of London is a historic castle located on the north bank of the River Thames in central London.
Answer: Tower of London