Complex sentence: Laddie Boy (July 26,1920--January 23,1929) a Airedale Terrier was presented to US President Warren G. Harding by Charles Quetschke of Caswell Kennels and became a celebrity during the Harding administration.
Split into simpler sentences: Laddie Boy (July 26,1920--January 23,1929) was an Airedale Terrier owned by US President Warren G. Harding. He was presented to US President Warren G. Harding by Charles Quetschke of Caswell Kennels and became a celebrity during the Harding administration.