Final answer:
The deed containing a guarantee of ownership is an example of a Covenant of Seisin which ensures the grantor's legal right to sell the property.
Step-by-step explanation:
A deed that contains a guarantee that the grantor really owns the property is an example of a Covenant of Seisin.
This covenant assures the buyer that the grantor has the legal right to sell the property and that it is free from undisclosed encumbrances.
This is a fundamental protection for buyers within property law, ensuring the security of the transaction and the legitimacy of the property's title.