Green Beans With Olives  
   --------  ------------  --------------------------------       1/2  pound         green beans -- trimmed       1/2  teaspoon      dried oregano     4                    brine-cured black olives -- pitted and chopped     1      tablespoon    unsalted butter -- softened                          lemon juice -- to taste    In a saucepan of boiling salted water boil the green beans with the oregano for   5 minutes, or until they are crisp-tender.  Drain the beans, transfer them to   a bowl, and toss them with the olives, the butter, the lemon juice, and salt an  d pepper to taste.
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