Logic Problem

• Borris owned less white roses than the janitor, and less than Opie.
• Ralph and Kaufman once dated the horse trainer.
• Kaufman wasn't the person who owned 12 white roses. Neither did Vanessa nor the horse trainer.
• Opie, who is not Ewing, is the nurse's cousin.
• The horse trainer isn't Ralph Ewing.
• Vanessa, Forsberg, and the person who owned 4 white roses each had different dinners last night.
• Vanessa and Forsberg once dated the janitor.
• Opie, the person who owned 4 white roses, and the nurse go shopping together on Saturdays.
• The person who owned 18 white roses, Ewing, and the nurse have known each other for years.
• Ralph, Forsberg, and Larry were not the person who owned 9 white roses.
• The person who owned 18 white roses, Vanessa, and the janitor went to the movies together.
• The janitor, the person who owned 12 white roses, didn't want a copy of Borris's book.
• The nurse isn't Larry or the person who owned 12 white roses.
• Kaufman isn't the nurse or the person who owned 18 white roses.
• The person who owned 9 white roses, Kaufman, and the janitor have known each other for years.
• The horse trainer isn't Larry Kaufman.
• The nurse, who owned 9 white roses, isn't Ewing.
• The nurse isn't Opie Forsberg.
• The horse trainer, the person who owned 18 white roses, didn't want a copy of Kaufman's book.
• The horse trainer, whose first name is Opie, wasn't the person who owned 9 white roses.