So there's really not that much dependence on long-haul air travel for example, probably not that much difference on regional air travel; obviously, China's got a big aviation business and those planes are back flying and they're back flying at bigger numbers than they are in the US.
Utilize the input text as a context reference, choose the right relationship between 'flying' and 'aviation' from the options.
Options: industry, employer, subsidiary, distributed by