Public demand excluding asset sales jumped 2.7 per cent to $8.7 billion, with defence accounting for around 30 per cent of that after the government shelled out $1 billion for two extra C-17 transport aircraft, two Airbus re-fuelling aircraft for $400 million, a $900 million defence communication system, a $325 million anti-rocket system and the ongoing $125 million- to $120 million cost of the Iraq and Syrian mission, according to ministerial announcements since March.
In the context of the input sentence, determine the relationship between 'Airbus' and 'aircraft'.
Options: operator, employer, director/manager, product/material produced