Complex sentence: The ship was built by John Brown & Company of Clydebank, Glasgow: she had been laid down in July 1939, launched on 7 May 1940 and completed on 4 November 1940.
Split into simpler sentences: The ship was built by John Brown & Company of Clydebank, Glasgow. She was laid down in July 1939, launched on 7 May 1940 and completed on 4 November 1940.