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: GRACE 3/4 Size White Acoustic Violin with Case and Bow+Free Rosin+Merano Brand E String
Product feature: Spruce top . Maple neck, back and sides ., Hard wood pegs, fingerboard and chinrest ., Alloy tailpiece with 4 built-in fine tuners ., Wood stick, genuine white horsehair bow ., Hard case with shoulder strap . Free Rosin, E string for replacement.
Product brand: Grace
Target attributes: Type
Answer: attribute: type
value: acoustic
source: product title