instruction:
Compose a new way to ask the same question. The new question must be asking the exact same thing as the original question does. Without any other information, you should be able to tell that the original question and the new question are the same. Preserve bracketed phrases in your new question. You can change the rest of the question provided the above requirements are satisfied. The new question must have a natural, fluent formulation, as if it were composed by a native English speaker. You will be given three pieces of information to help you create better questions. Those are: "Answer": the answer to the question, e.g., "Honolulu". "Answer Type": the type of the answer, e.g., "Location". "Auxiliary Information" is a detailed description of some concepts mentioned in the question, if any.
question:
original question: Which measurement system has the pressure units of [Megapascal]?
answer: international system of units
answer type: Measurement System.
answer:
[Megapascal] is the pressure units of what measurement system?


question:
original question: Which featured artist has the albums [I Couldn't Believe My Eyes Plus...]?
answer: earl hooker
answer type: Featured artist.
answer:
[I Couldn't Believe My Eyes Plus...] is the album belonging to what artist?


question:
original question: What is the drug administration route for administered drug [Nitrous oxide]?
answer: inhalation
answer type: Drug administration route.
auxiliary information: Nitrous oxide, commonly known as laughing gas, nitrous, nitro, or NOS is a chemical compound with the formula N 2O. It is an oxide of nitrogen. At room temperature, it is a colourless, non-flammable gas, with a slightly sweet odour and taste. It is used in surgery and dentistry for its anaesthetic and analgesic effects. It is known as "laughing gas" due to the euphoric effects of inhaling it, a property that has led to its recreational use as a dissociative anaesthetic. It is also used as an oxidizer in the launching of rockets and in motor racing to increase the power output of engines. At elevated temperatures, nitrous oxide is a powerful oxidizer similar to molecular oxygen. Nitrous oxide gives rise to nitric oxide on reaction with oxygen atoms, and this NO in turn reacts with ozone. As a result, it is the main naturally occurring regulator of stratospheric ozone. It is also a major greenhouse gas and air pollutant. Considered over a 100-year period, it has 298 times more impact per unit mass than carbon dioxide. It is on the WHO Model List of Essential Medicines, the most important medications needed in a health system.
answer:

Name the drug administration route for the drug [Nitrous oxide].