Complex sentence: The day of the flight he took out a $CAD10,000 insurance policy on his wife, a considerable sum at that time, which he attempted to collect three days later; there was also a prior $5000 policy dating from 1942.
Split into simpler sentences: The day of the flight he took out a $CAD10,000 insurance policy on his wife, a considerable sum at that time, which he attempted to collect three days later. There was also a prior $5000 policy dating from 1942.