Generate a topic word for the given sentence. A topic word is usually the name of a person, place, animal, concept or object the sentence is focusing on.

karl mannheim (27 march 1893 - 9 january 1947), or károly mannheim in original writing of his name, was a hungarian-german sociologist and social scientist.
karl mannheim

roger mudd (born february 9, 1928) is an american broadcast journalist.
roger mudd

henry's marriage to catherine of aragon was finally annulled in the following may by archbishop cranmer, thus ending the first of henry's 6 marriages.

catherine of aragon