user: Question: How many date of appointment entries are there when the team is Khazar Lankaran?
Columns: ['Team', 'Outgoing manager', 'Manner of departure', 'Date of vacancy', 'Replaced by', 'Date of appointment']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Gabala', 'Ramiz Mammadov', 'End of contract', '10 May 2010', 'Tony Adams', '12 May 2010']
SQL:

assistant: SELECT COUNT("Date of appointment") FROM "Table" WHERE "Team" = 'Khazar Lankaran';