I want to know the answer to the following question:
Which river is second to the Nile as a freshwater source to the Mediterranean?
All the background I'm provided with is that "Major European rivers flow from Switzerland, such as the Rhine, the Rhone, the Inn, the Ticino and the Po, all of which have headwaters in the Alps and flow into neighbouring countries, finally emptying into the North Sea, the Mediterranean Sea, the Adriatic Sea and the Black Sea.". Is that enough to answer the question?