Database: tracking_grants_for_research
Question: What is the total grant amount of the organisations described as research?
SQL:
SELECT sum(grant_amount) FROM Grants AS T1 JOIN Organisations AS T2 ON T1.organisation_id  =  T2.organisation_id JOIN organisation_Types AS T3 ON T2.organisation_type  =  T3.organisation_type WHERE T3.organisation_type_description  =  'Research'