Context: At certain times of the year, The Queen Mary 2, Queen Elizabeth and Queen Victoria may all visit Southampton at the same time, in an event commonly called 'Arrival of the Three Queens'.

Question: What does Southampton call the event when three ships named after queens all visit the city?
Answer: Arrival of the Three Queens

Question: Which of the "Three Queens" has a number in its name?
Answer: Queen Mary 2

Question: Along with the Queen Mary 2 and Queen Victoria, which third ship must be present for the 'Arrival of the Three Queens'?
Answer: Queen Elizabeth