Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Too Difficult for Kids to Assemble

I got this because my 4-year-old loves gears. My kids have the Playschool Busy Gears and love them. I thought this would be a more advanced version of that for her to play with. I don't like this toy though because it is really difficult to put together. My daughter likes to turn the gears with the handle, but an adult always has to build it for her. Other kids I have seen play with this toy have a lot of trouble too. It looks cool but isn't a practical choice for a kid. The base is really hard to put together because not all of the pieces will interlock with each other. The pegs that hold the gears onto the base are also very hard to put on.