Which of the following statements are arguable?

1
Which of the following statements are arguable?

• The Lord of the Rings was the best movie of the
  last decade.
• The climate of the earth is gradually getting
  warmer.
• The U.S. must further reduce social spending in
  order to balance the budget.
• Shakespeare died in 1616.
• Water boils at 212 degrees Fahrenheit.
• Van Goghs paintings are the work of a madman.
• The incidence of breast cancer has risen in the
  last 10 years.
• A 55 mph speed limit lowers accident rates.
• Readers should reject womens magazines with
  advertising that presents airbrushed models.