I want to know the answer to the following question:
When was Constantinople taken over by the Ottoman?
All the background I'm provided with is that "Paideia was one of the highest societal values in the Greek and Hellenistic world while the first European institution described as a university was founded in 5th century Constantinople and operated in various incarnations until the city's fall to the Ottomans in 1453.". Is that enough to answer the question?