Assertion: glider's lift | /r/HasProperty | based on the need
Facets:
Source sentences:
text: Although every division commander requested two drops on the first day, Brereton's staff scheduled only one lift based on the need to prepare for the first drop by bombarding German flak positions for half a day and a weather forecast on the afternoon of 16 September (which soon proved erroneous) that the area would have clear conditions for four days, so allowing drops during them.