What is the relationship between 'Airbus' and 'aircraft' in the context of the input sentence.
Options: stock exchange, brand, product/material produced, position held

So, turning then to our individual end markets, in civil OE, deliveries of new aircraft by Boeing and Airbus were down 50% and 71%, respectively – staggering numbers – as airlines and operators deferred deliveries in their efforts to cut capacity, both this year and into the future.
product/material produced