I want to know the answer to the following question:
What are a couple examples of Summer music festivals held in Portugal?
All the background I'm provided with is that "Portugal has several summer music festivals, such as Festival Sudoeste in Zambujeira do Mar, Festival de Paredes de Coura in Paredes de Coura, Festival Vilar de Mouros near Caminha, Boom Festival in Idanha-a-Nova Municipality, Optimus Alive!,". Is that enough to answer the question?