sentences: the ability to preserve food and tranport food is part of the transportation technology for food
docs: pasteurization is preserving_food. preserving_food is food_manipulation. dehydrated_food is convenience_food. delicatessen is convenience_food. canning is preserving_food. canned_food is convenience_food. smoking_food is preserving_food. food_storage_container is storage_device. preserving_food is becoming. convenience_food is food.