Answer:
long-term capital gain       150,000
Explanation:
It will record as follow:
note receivable      75,000 debit
Westminster Shares 200,000 debit
     property                  125,000 credit
     long-term capital gain       150,000 credit
The gain will be the diffrence betwene the sales price and the basis of the property for William.
It is a long-term gain as the property has more than 2 years in William books.