Does "But by the 19th century the Portuguese were sufficiently secure in Bissau to regard the neighbouring coastline as their own special territory, also up north in part of present South Senegal." contain the correct answer to "What other area did the Portuguese regard as their special territory?"

A: yes

Does "This left a prodigious quantity of uranium as a waste product, since it takes three tonnes of uranium to extract one gram of radium." contain the correct answer to "Who isolated radium in uranium ore?"

A: no

Does "In early 1757, Frederick II again took the initiative by marching into the Kingdom of Bohemia, hoping to inflict a decisive defeat on Austrian forces." contain the correct answer to "Who led the Prussian assault on Prague in 1757"

A:
yes