Question:
Who was the chair of World Wide Fund for Nature in Apr, 2000?

Context:
 Sara Morrison is the chair of World Wide Fund for Nature from Jan, 2000 to Jan, 2001. 
 Prince Bernhard of the Netherlands is the chair of World Wide Fund for Nature from Jan, 1962 to Jan, 1976. 
 Ruud Lubbers is the chair of World Wide Fund for Nature from Jan, 1999 to Jan, 2000. 
 John Hugo Loudon is the chair of World Wide Fund for Nature from Jan, 1976 to Jan, 1981. 
 E. Neville Isdell is the chair of World Wide Fund for Nature from Jun, 2022 to Dec, 2022. 
 Syed Babar Ali is the chair of World Wide Fund for Nature from Jan, 1996 to Jan, 1999. 
 Yolanda Kakabadse is the chair of World Wide Fund for Nature from Jan, 2010 to Jan, 2018. 
 Emeka Anyaoku is the chair of World Wide Fund for Nature from Jan, 2002 to Jan, 2009. 
 Prince Philip, Duke of Edinburgh is the chair of World Wide Fund for Nature from Jan, 1981 to Jan, 1996. 
 Pavan Sukhdev is the chair of World Wide Fund for Nature from Nov, 2017 to Jan, 2021.

Answer:
Sara Morrison