Complex sentence: Elizabeth Gladys Millvina Dean (2 February 1912--31 May 2009) was a British civil servant and cartographer, best known for being the last remaining survivor of the sinking of the RMS "Titanic" on 15 April 1912.
Split into simpler sentences: Elizabeth Gladys Millvina Dean (2 February 1912--31 May 2009) was a British civil servant and cartographer. She was the last remaining survivor of the sinking of the RMS "Titanic" on 15 April 1912.