What is Instant Messaging, when Electronic Meeting System is "Yes", and when Name is "Microsoft Sharepoint"?
CREATE TABLE "comparison_of_features" (
  "name" text,
  "e_mail_server" text,
  "faxing" text,
  "instant_messaging" text,
  "telephony" text,
  "videoconferencing" text,
  "web_conferencing" text,
  "data_conferencing" text,
  "application_sharing" text,
  "electronic_meeting_system" text,
  "synchronous_conferencing" text
);
SELECT "instant_messaging" FROM "comparison_of_features" WHERE "electronic_meeting_system"='yes' AND "name"='microsoft sharepoint';