astronauts	astronaut	0.1374
shuttle	shuttl	0.1374
hours	hour	0.1374
walk	walk	0.1374
space	spac	0.0497
space walk	spac walk	0.0497
spent	spent	0.0497
ship	ship	0.0497
prolonged	prolong	0.0497
air	air	0.0497
place	plac	0.0081
seven hours	sev hour	0.0081
space suits	spac suit	0.0081
brought	brought	0.0081
air lock chamber	air lock chamber	0.0081