This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.

Southampton Airport is a regional airport located in the town of Eastleigh, just north of the city. It offers flights to UK and near European destinations, and is connected to the city by a frequent rail service from Southampton Airport (Parkway) railway station, and by bus services.
In what town is Southampton Airport located?

The city has a strong higher education sector. The University of Southampton and Southampton Solent University together have a student population of over 40,000.
Is Southampton's higher education sector weak or strong?

The Portuguese explorer Diogo Cão reached the mouth of the Congo in 1484. Commercial relationships quickly grew between the inland Bantu kingdoms and European merchants who traded various commodities, manufactured goods, and people captured from the hinterlands. After centuries as a major hub for transatlantic trade, direct European colonization of the Congo river delta began in the late 19th century, subsequently eroding the power of the Bantu societies in the region.
Whose expedition arrived at the mouth of the Congo River in 1484?