Analyze the relationship between 'Airbus' and 'aircraft' within the context of the input sentence.
Options: product/material produced, owner of, member of, subsidiary

As far as the fleet, as we announced in April, our fleet simplification plan went into high gear during the quarter as we officially retired the Embraer 190s, Boeing 757s, Boeing 767s, and Airbus A330-300 aircraft as well as a number of regional jets.
product/material produced