CREATE TABLE table_204_295 (id NUMBER, "model" CLOB, "origin" CLOB, "type" CLOB, "version" CLOB, "in service" NUMBER, "notes" CLOB)

how many maxi ambulance vehicles are in service ?
SELECT "in service" FROM table_204_295 WHERE "model" = 'maxi-ambulance'
SELECT "in service" FROM "table_204_295" WHERE "model" = 'maxi-ambulance'