Wikipedia entity: Termite
Topics: greenhouse gases; termites; atmospheric methane
Original sentence: Termites are considered to be a major source (11%) of atmospheric methane, one of the prime greenhouse gases, produced from the breakdown of cellulose.
Quantified sentence: Termites are considered to be a large source of atmospheric methane, one of the prime greenhouse gases, produced from the breakdown of cellulose.
Quantifier: large
Percentage: 11%
Specificity: unable