    Senterice. 1: It 's’ one of several tiegotiating  items: where-Canada appears to have. caved  in «to “US: :demands -and ° accepted less  favourable teris .    Sentence 2: Giving.up'half the duties jS one of  several negotiating items’ where “Canada  appears. ¥o-havé cavedin to U.S, demarids:  and -acceptédless favotirable terns.