### Instruction:
Determine which continent the following cities are located: London, Singapore, New York, Sao Paulo, Buenos Aires, Melbourne, Jakarta, Boston, Paris, Riyadh, Lagos, Casablanca, Toronto, and Berlin.

### Response:
New York, Boston, and Toronto are based in North America. London, Paris, and Berlin are in Europe. Jakarta, Riyadh, and Singapore are in Asia. Lagos and Casablanca are in Africa. Buenos Aires and Sao Paulo are in South America. Lastly, Melbourne is in Australia.