Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: 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 )

### Question ###
What is Instant Messaging, when Electronic Meeting System is 'Yes', and when Name is 'Microsoft Sharepoint'?

### Accurate SQL ###

SELECT "Instant messaging" FROM table_59591 WHERE "Electronic meeting system" = 'yes' AND "Name" = 'microsoft sharepoint'