Assertion: starling's time | /r/HasProperty | spent on their acclimatization
Facets:
Source sentences:
text: The introduced birds would have to possess three qualifications: they would have to be able to eat both insects and seeds, otherwise they would not survive the winters; they must be non-migratory, otherwise the time and money spent on their acclimatization would be wasted; and they must be prolific breeders, so that they should multiply and soon overcome insect pests.