Sentence:  A lot of people were still thinking about Jack Nicklaus , the spectacular young amateur , who had a 70 ; or Ken Venturi , who had a somewhat shaky 72 but <WSD>was</WSD> bound to do better ; or Rosburg , whose accurate short game and supersensitive putter can overcome so many of Augusta 's treacheries ; or even old Byron Nelson , whose excellent 71 made one wonder if he had solved the geriatric aspects of golf . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)