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

Input:
Product title: EXPO 1751669 Click Dry Erase Markers Fine Tip Black Dozen
Product description: Create bold marks with a convenient click using Expo Click Dry Erase Markers. These retractable dry erase markers feature brilliant low-odor ink that makes intense marks on most nonporous surfaces including whiteboards and glass. The innovative Safety Seal valve prevents the whiteboard markers from drying out and the retractable design eliminates lost caps. The ink also resists smearing, making it perfect for classrooms, offices and homes. Marker Type: Dry Erase; Color(s): Black; Tip Type: Fine; Ink Types: Non-Washable.
Product feature: Sold as 1 Dozen., Unique Safety SealTM valve design prevents marker dry out., Bright, vivid ink is specially formulated to be low odor., Quick-drying and smearproof., Use to write on whiteboards, glass and most nonporous surfaces.
Product price: $29.51
Product brand: Expo
Target attributes: Specialty Ink
Answer: attribute: specialty ink
value: dry erase
source: product title
attribute: specialty ink
value: dry erase
source: product description