Complex sentence: Thomas Laird Kennedy (1878-1959) served as interim Premier of Ontario and leader of the Ontario Progressive Conservative Party following George Drew's loss of his seat in the 1948 Ontario election.
Split into simpler sentences: Thomas Laird Kennedy (1878-1959) was a politician in Ontario, Canada. Kennedy served as interim Premier of Ontario and leader of the Ontario Progressive Conservative Party following George Drew's loss of his seat in the 1948 Ontario election.