user: Question: How many time does the platelet count occur when prothrombin time and bleeding time are Prolonged?
Columns: ['Condition', 'Prothrombin time', 'Partial thromboplastin time', 'Bleeding time', 'Platelet count']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Vitamin K deficiency or warfarin', 'Prolonged', 'Normal or mildly prolonged', 'Unaffected', 'Unaffected']
SQL:

assistant: SELECT COUNT("Platelet count") FROM "Table" WHERE "Prothrombin time" = 'Prolonged' AND "Bleeding time" = 'Prolonged';