Anchor: At IRS we identified the challenges the organization faces in revamping its human capital policies to help achieve its congressionally mandated transformation to an agency that better balances service to the taxpayers with enforcement of the tax laws.
Entailed: The IRS aims to provide better service to tax payers while also improving its enforcement of tax laws.
Contradiction: The IRS is Congressionally mandated to provide poor service to people who don't pay their taxes.
Contradiction: Her lawn is lovely and full of the greenest grass you've ever seen. 
Contradiction: The best time to wander in the street is without many people.
Contradiction: the two girls are sitting around
Contradiction: Someone is working