I want to know the answer to the following question:
Along with the Oriana, what's the other P&O liner with a name that starts with the same letter?
All the background I'm provided with is that "The importance of Southampton to the cruise industry was indicated by P&O Cruises's 175th anniversary celebrations, which included all seven of the company's liners visiting Southampton in a single day.". Is that enough to answer the question?
Answer: no