Question: What are the names of various companies that produce and export fish products?
Answer: Portuguese processed fish products are exported through several companies, under a number of different brands and registered trademarks, such as Ramirez (the world's oldest active canned fish producer), Bom Petisco, Nero, Combate, Comur, General, Lider, Manna, Murtosa, Pescador, Piteu, Tenorio, Torreira and Vasco da Gama.[citation needed]
A single-select problem: Is the question answered in a satisfactory fashion?

Choices:
+ yes;
+ no;
yes