Which Weight (kg) has a Manufacturer of fujitsu, and a Model of lifebook p1610?
CREATE TABLE "subnotebooks" (
  "model" text,
  "manufacturer" text,
  "weight_kg" real,
  "display_size_in" real,
  "processor_model" text,
  "storage_type" text
);
SELECT AVG("weight_kg") FROM "subnotebooks" WHERE "manufacturer"='fujitsu' AND "model"='lifebook p1610';