Complex sentence: Prof John McDougal Russell Greig CBE FRSE (1889 -) was a Scottish veterinarian who was Director of the Moredun Research Institute from 1930 to 1954.
Split into simpler sentences: Prof John McDougal Russell Greig CBE FRSE (1889 -) was a Scottish veterinarian. He was Director of the Moredun Research Institute from 1930 to 1954.