Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: Forum Novelties G-Rated Christmas Shot Glasses, Plastic, Multicolor
Product description: Set of 4 Christmas themed shot glasses. Available in Naughty (X rated) or Nice (G rated) versions. Adds a little something extra to a party. Forum Novelties has party decor for every occasion. For more than 30 years, Forum Novelties has been a leader in the costume industry, as well as the joke, trick, magic, and novelty gift item business. Forum offers more than 10,000 items to choose from, including costumes and accessories for Halloween, Christmas, Mardi Gras, St. Patrick's Day, Hawaiian luau, and beyond. From funny to frightening, Forum has it all.
Product feature: Set of 4 Christmas themed shot glasses, G Rated festive glasses, Standard size shot glasses, Festive theme packaging, Hand washing recommend
Product price: $8.99
Product brand: Forum Novelties
Target attributes: Special Occasion
Answer: attribute: special occasion
value: christmas shot glasses
source: product title
attribute: special occasion
value: christmas themed shot glasses
source: product description
attribute: special occasion
value: christmas themed shot glasses
source: product feature