Wikipedia entity: Electric aircraft
Topics: aviation; transportation; energy source
Original sentence: Mostly urban air taxis (50%) and general aviation  aircraft (47%), a majority are battery-powered (73%), while some are hybrid-electric (31%), most of these being larger airliners.
Quantified sentence: Mostly urban air taxis (50%) and general aviation aircraft (47%), a large number are battery-powered while some are hybrid-electric (31%), most of these being larger airliners.
Quantifier: large
Percentage: 73%
Specificity: unable