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: Aliens - Alien Xenomorph ’79 - 7" Scale Action Figure
Product description: From the original 1979 movie that shocked audiences and jump-started a legendary film franchise! The Xenomorph known to fans as Big Chap stands over 9 tall, and has a hinged jaw that opens, revealing an inner mouth that extends for realistic movie action. It has almost 30 points of articulation, including double knee joints and a bendable tail, and extra attention has been paid to all the eerie details that made H.R. Giger's designs for Alien so mesmerizing. Collector-friendly window box packaging!
Product feature: 30 points of articulation, Original 1979 Style, Over 9" Tall
Product price: $55.99
Product brand: NECA
Target attributes: Theme
Answer: attribute: theme
value: None
source: None