And so obviously, there were some aircraft that were built by Embraer but they were all lessor financed; and so we will be taking a few Embraers and a few Airbus aircraft over the next, call it, 12 to 18 months, already built aircraft.
What is the relationship between 'Airbus' and 'aircraft' in the context of the input sentence.
Options: product/material produced, original broadcaster, headquarters location, chief executive officer