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: Robo Maxx RV1LX Robotic Vacuum Cleaner
Product description: Robo Maxx is a robotic vacuum floor cleaner. Robo Maxx robots are very well engineered and have many patented features exclusive to Robo Maxx. This company has been in business for almost 15 years. Robo Maxx is an affordable machine for every household. With the robotic cleaner, you can have clean floors every day. You set up the machine and walk away and let it Robo Maxx clean your floors automatically. This machine will get underneath your furniture in those hard to get places. Robo Max has several machines that have rechargeable batteries and or docking station that will charge the machine.
Product feature: Specially designed sweep & suck motion that hardly tangles hair with two rotating spinning brushes and mop function with special static dust included, Built-in cliff avoidance sensors prevents the unit from falling down stairs., Easily removable debris bin., Low noise level., Long life span motor (about 5000 hours) with rechargeable battery Included
Product brand: Robo Maxx
Target attributes: Weight
Answer: attribute: weight
value: None
source: None