source: At the end of three years of construction the new cathedral started its first divine service, with the consecration taking place on July 25, 1848.
target: The construction of the new cathedral took three years. Upon completion, the first divine service began. The consecration took place on July 25, 1848.
references: The construction of the new cathedral took three years. Upon completion, the first divine service began. The consecration took place on July 25, 1848.