Complex sentence: Some of the Zinfandel vineyards in this county are more than 125 years old, including the original Grandpère vineyard, planted with Zinfandel before 1869 and believed to be the oldest Zinfandel vineyard in America.
Split into simpler sentences: Some of the Zinfandel vineyards in this county are more than 125 years old; including the original Grandpère vineyard, planted with Zinfandel before 1869. The vineyard is believed to be the oldest Zinfandel vineyard in America.