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: Royal Crystals "Made with Swarovski Crystals Elements" Sterling Silver Aurora Borealis Drop Dangle Hook Earrings
Product feature: Measurements of the aurora borealis earrings: length:29mm/ 1.14173 inches long, The drop crystal of the Sterling silver earrings is not stiff and not solid to the silver hook finding. That makes them dangle earrings., These Made with Swarovski crystals earrings are of medium size what makes them perfect earrings for women and teen girls., As aurora borealis earrings with ab coating they sparkle with rainbow of colors. They are more clear blue on the white background and orange clear on the dark background., Ideal gift giving idea for such occasion as birthday, Christmas, Valentine's day, Mother's Day, Anniversary, Prom, Wedding, ideal bridal jewelry and perfect as gift for bridesmaids. You can gift it to your mother, daughter, sister, grandmother., Product Dimensions: 1.1 x 0.4 x 0.4 inches, Shipping Weight: 0.8 ounces, ASIN: B00Y3WK6EQ, Item model number: CINDERELLAPIERE, Date first listed on Amazon: May 22, 2015, Average Customer Review: 4.2 out of 5 stars 43 customer reviews
Product brand: Royal Crystals
Target attributes: Silhouette
Answer: attribute: silhouette
value: drop
source: product title
attribute: silhouette
value: dangle
source: product title
attribute: silhouette
value: hook
source: product title
attribute: silhouette
value: drop
source: product feature