Wikipedia entity: FEMA trailer
Topics: environmental hazard; testing; formaldehyde; housing
Original sentence: In 2007, tests on a number of FEMA trailers by the Sierra Club showed 83% had levels of formaldehyde in the indoor air at levels above the EPA recommended limit.
Quantified sentence: In 2007, tests on a number of FEMA trailers by the Sierra Club showed most had levels of formaldehyde in the indoor air at levels above the EPA recommended limit.
Quantifier: most
Percentage: 83%
Specificity: unable