After a year cellars were constructed and the first vintage could be bottled at the domain in 1999 Stephanes sister Isabelle MunozSaurel has worked at the domain since 2005

Add punctuation.
After a year cellars were constructed and the first vintage could be bottled at the domain in 1999. Stephane's sister, Isabelle Munoz-Saurel has worked at the domain since 2005.