・claimにはいろいろ用法がありますが、次は獲る、達成する、~を得るという意味で新聞でよく使われる用法です。
Mongolian Hakuho claims first Emperor's cup.
・意見の対立にsplitが使われています。
The Europin Uniion and Washington are split over an EU proposal to offer Iran a generous package of incentives including nuclear reactors and security pledges if it stops enriching uranium.
・unload 株などを大量に売る
1) Individual margin traders are apparently rushing to unload their holdings to avoid receiving margin calls.
2) Foreign investors, who also helped lead the recent rally, have also been unloading their Japanese shareholdings of late, placing more sell orders than buy orders in early morning trading for six straight sessions through May 18.