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: Vivitar PRO Line PL200 Video/Photo Tripod
Product description: Features and specifications include: Low angle function Shoot inversely, head may be threaded into bottom of center column Use click stop for 3 angles of spread Geared elevator and central friction control Rubber feet and leg lock for maximum stability Bubble level Leg Type: 3 section tubular Leg Diameter: 1.1 inches Adjustable Leg Angle Rubber Leg Tip Platform Controls: Independent tilt and pan lock Scale Indicator: 360 degrees Geared Elevator Elevator Friction Maximum Height: 61.02 in Folded Length: 25.12 in Weight: 6.9 lbs
Product feature: Low angle function, Geared elevator and central friction control, Rubber feet and leg lock for maximum stability, Bubble level, Use click stop for 3 angles of spread
Product brand: Vivitar
Target attributes: Load Capacity
Answer: attribute: load capacity
value: None
source: None