Assertion: space shuttle's flight | /r/HasProperty | flown
Facets:
value: before putting an astronaut crew
type: TEMPORAL
Source sentences:
text: Previous Mercury, Gemini, and Apollos were man-rated in advance, meaning that unmanned flights were flown before putting an astronaut crew onboard.
text: This event triggered our group to a VERY high priority level and the next flight was flown (and every flight since) without PAL ramps on LH2 and O2 feedlines on ET.