Instruction: Using the product's title, description, features, price, and brand, identify and retrieve the values associated with a specified set of target attributes. Output the extracted values along with their respective sources (e.g., title or feature) indicating where each value was found.

Input:
Product title: Uniden EXAI8985 Digital Cordless Phone and Answering System
Product description: 900 MHz Digital cordless telephone; Digital answering machine with 15 minute record time; Caller ID with call waiting (50 # memory); Speaker phone; Headset jack; Dual keypad; Lighted keypad; 20 # memory dialing., The Uniden EXAI8985 offers all the convenience of a cordless phone with the enhancement of a built-in digital answering system. Features include dual keypads, call waiting/caller ID (this function requires enrollment in call waiting/caller ID service from your phone company), a 50-name/number memory, and a speakerphone. In addition, the EXAI8985's digital 900 MHz technology provides extended range, voice clarity, and performance, giving you the freedom to multitask from greater distances with less interference than older-model cordless phones. And a three-line, 16-character backlit display makes browsing the names and numbers you've stored in memory simple., The EXAI8985 has the essential features you look for in a completely digital answering machine, including call screening and remote operation for activation or retrieval of messages. The machine provides 15 minutes of recording time, a time-and-date marker, and a one-year limited warranty. And an optional headset (not included) can be connected for convenient, hands-free operation.
Product feature: 900 MHz digital, Digital answering machine, Caller ID/call waiting with 50-number caller-ID memory, Speakerphone with dual keypads; 20-number memory dialing, 120 mintues of free long distance from Uniden; call 1-888-447-9709 for details
Product brand: Uniden
Target attributes: Use
Answer: attribute: use
value: None
source: None