Instruction: Given the title, description, feature, price, and brand of a product and a set of target attributes, extract the value of each target attribute from the product information. Output the extracted value and the corresponding source (e.g., title or feature) denoting where the value is extracted.

Input:
Product title: Hoya 55mm 4X (0.6) Neutral Density Multi Coated Glass Filter
Product description: In conditions of extreme light intensity, such as sunshine on snowy mountains or on the beach, or when using a camcorder, ND (Neutral Density) filters are recommended as essential. Neutral Density filters are often ignored by photographers, but they have several uses and offer the possibility to achieve otherwise unachievable results. ND filters appear gray and reduce the amount of light reaching the film, they have no affect on color balance.
Product feature: Eliminates overly bright, washed-out images., Balances exposures., Increases control of depth of field., Equally effective in color or black and white photography., Multi Coated for flare prevention.
Product price: $21.11
Product brand: Hoya
Target attributes: Neutral Density Type
Answer: attribute: neutral density type
value: None
source: None