Complex sentence: She starred in the 1960 musical comedy "The Unsinkable Molly Brown" for which she won a Tony Award (Best Featured Actress in a Musical) portraying the title character, a Western mining millionairess who survived the sinking of the Titanic.
Split into simpler sentences: She starred in the 1960 musical comedy "The Unsinkable Molly Brown" for which she won a Tony Award (Best Featured Actress in a Musical). She portrayed the title character, a Western mining millionairess who survived the sinking of the Titanic.