Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: Okuma Citrix Lightweight Fishing Rods-Ci-S-691ML (Black, 6-Feet/9-Inch)
Product description: Okuma's Citrix lightweight 1 piece fishing rod. This great looking rod features IM8 graphite blank construction, lightweight EVA split grips for reduced weight, zero foregrip design for improved balance and weight reduction, ALPS stainless steel guide frames, Zirconium line guide inserts for use with braid or mono lines, Pac Bay MINIMA reel seat for reduced weight, custom anodized aluminum reel seat threads for strength and balance, stainless steel hook keeper. All Citrix rods are backed by a limited lifetime warrant
Product feature: IM8 graphite blank construction, Lightweight EVA split grips for reduced weight, ALPS stainless steel guide frames, Zirconium line guide inserts for use with braid or mono lines, Limited Lifetime warranty
Product brand: OKUMA
Target attributes: Material
Answer: attribute: material
value: graphite
source: product feature
attribute: material
value: graphite
source: product description