Assertion: 1st class's seat | /r/CapableOf | heighten jet lag
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Source sentences:
text: That's all hard to come by in economy, where little service, cramped seats, and a longer waiting time to deboard are more likely to heighten jet lag and therefore create lost productivity — not exactly ideal for a family with a toddler or a businessperson who needs to head into a meeting right after hopping off the red-eye.