CREATE TABLE table_59591 ("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)

What is Instant Messaging, when Electronic Meeting System is 'Yes', and when Name is 'Microsoft Sharepoint'?
SELECT "Instant messaging" FROM table_59591 WHERE "Electronic meeting system" = 'yes' AND "Name" = 'microsoft sharepoint'
SELECT "Instant messaging" FROM "table_59591" WHERE "Electronic meeting system" = 'yes' AND "Name" = 'microsoft sharepoint'