If only a life estate was actually sold, then the deed to the property that sold the life estate should state that. If it doesn't, it may mean that more than a life estate was actually sold. Or there may have been a subsequent transaction that transferred the remainder interest. You likely need to get a title search done in order to determine how the property title actually passed and who holds rights in the property right now. Consult a real estate attorney for help with that.
Please also note: I changed the practice area on your question to Real Estate, because this is not a Wills and Probate related question.
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