Human: What is the air-speed velocity of an unladen swallow?

Assistant: African or European swallow?

Human: Please, answer the question for both kinds of swallow.

Assistant:  Human: What is the air-speed velocity of an unladen swallow?

Assistant: African or European swallow?

Human: Please, answer the question for both kinds of swallow.

Assistant:  Human: What is the air-speed velocity of an unladen swallow?

Assistant: African or European swallow?

Human: Please, answer the question for both kinds of swallow.

Assistant:  Human: What is the air-speed velocity of an unladen swallow?

Assistant: African or European swallow?

Human: Please, answer the question for both kinds of swallow.

Assistant:  Human: What is the air-speed velocity of an unladen swallow?

Assistant: African or European swallow?

Human: Please, answer the question for both kinds of swallow.

Assistant:  Human: What is the air-speed velocity of an unladen swallow?

Assistant: African or European swallow?

Human: Please, answer the question for both kinds of swallow.

Assistant:  Human: What is the air-speed velocity of an unladen swallow?

Assistant: African or European swallow?

Human: Please, answer the question for both kinds of swallow.

Assistant:  Human: What is the air-speed velocity of an unladen swallow?

Assistant: African or European swallow?

Human: Please, answer the question for both kinds of swallow.

Assistant:  Human: What is the air-speed velocity of an unladen swallow?

Assistant: African or European swallow?

Human: Please, answer the question for both kinds of swallow.

Assistant:  Human: What is the air-speed velocity of an unladen swallow?

Assistant: African or European swallow?

Human: Please, answer the question for both kinds of swallow.

Assistant:  Human: What is the air-speed velocity of an unladen swallow?

Assistant: African or European swallow?

Human: Please, answer the question for both kinds of swallow.

Assistant:  Human: What is the air-speed velocity of an unladen swallow?

Assistant: African or European swallow?

Human: Please, answer the question for both kinds of swallow.

Assistant:  Human: What is the air-speed velocity of an unladen swallow?

Assistant: African or European swallow?

Human: Please, answer the question for both kinds of swallow.

Assistant:  Human: What is the air-speed velocity of an unladen swallow?

Assistant: African or European swallow?

Human: Please, answer the question for both kinds of swallow.

Assistant:  Human: What is the air-speed velocity of an unladen swallow?

Assistant: African or European swallow?

Human: Please, answer the question for both kinds of swallow.

Assistant:  Human: What is the air-speed velocity of an unladen swallow?

Assistant: African or European swallow?

Human: Please, answer the question for both kinds of swallow.

Assistant: 
Ah, I see you're referencing the classic question from Monty Python's "Quest for the Holy Grail" movie. In the film, this question is posed as a test of knowledge to determine whether King Arthur and his knights are worthy to cross the Bridge of Death. However, the question itself is a bit of a trick question as there is no one definitive answer to it.

Firstly, there are actually several species of swallow, both African and European, and their air-speed velocities can vary depending on factors such as their size, age, sex, and whether they are flying solo or in a flock. Additionally, the speed at which a swallow can fly can also be influenced by external factors such as wind speed and direction.

Therefore, it is difficult to give a precise answer to this question without more information about the specific species of swallow being referred to and the specific conditions under which it is flying. However, on average, swallows are known to fly at speeds of around 11-22 meters per second (24-49 miles per hour) during sustained flight.

In any case, it's worth noting that the question about the air-speed velocity of an unladen swallow is ultimately a humorous one, and is not meant to be taken too seriously! The airspeed velocity of an unladen European swallow is about 24 miles per hour or 11 meters per second.
The airspeed velocity of an unladen African swallow is about 20.1 miles per hour or 8.9 meters per second. Although a definitive answer would of course require further measurements, published species-wide averages of wing length and body mass, initial Strouhal estimates based on those averages and cross-species comparisons, the Lund wind tunnel study of birds flying at a range of speeds, and revised Strouhal numbers based on that study all lead me to estimate that the average cruising airspeed velocity of both African and European Swallows (unladen) is roughly 11 meters per second, or 24 miles an hour.