This requirement was met by the Rolls-Royce LiftSystem , developed through a $ 1.3 billion System Development and Demonstration ( SDD ) contract from Pratt & amp ; Whitney .
DET NOUN AUX VERB ADP DET PROPN PROPN , VERB ADP DET SYM NUM NUM PROPN PROPN CCONJ PROPN ( PROPN ) NOUN ADP PROPN CCONJ NOUN ; PROPN .