Both utilize the contingent valuation method.
Both use a method called the contingent valuation method.
The contingent valuation method can be used.
Malamud's sister, in her new book, talked about the relationship between her and her father's books.
A street performer plays his guitar.
Russert has a pleasant, full voice and Wagner is a charismatic business owner.
A girl is riding her bike.
Gauve didn't care what it was.
A boy is playing with a dog.