Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: Has anyone added an electric motor to the tricycle?
Document: It will take a little ride time to get used to the balance of a tricycle over a standard bike. The 3 speeds make it easy to pedal. The seat and handlebars will set up for just about anyone to ride. The rear basket is set a little close and your feet will hit on it when you pedal. I reset the basket farther back, (had to drill two new holes), to fix this problem. We have been asked by several people where we got the trike.
The tricycle was very well build, it was easy to assemble and I enjoy it very much, as one of my friends commented...WOW  you have a Cadillac.
This is not a diy sort of bike. The instructions are extremely difficult to follow.Worksman Port-o-Trike Three Speed Adult Tricycle
This tricycle for adults came on time, Tried to put it together. It was not easy because the instructions were not clear. It would mention a part, it was in the parts list but no diagram or pictures of the part so one has to guess which is the part as best as one can do. There were missing parts small parts which could be replaced if one have the parts ( metal washers, small bolts). Then there was an issue with the front tire.
Worksman Port-o-Trike Three Speed Adult TricycleThis tricycle arrived promptly and in good condition. It was easy to assemble. It arrived with front caliper brakes instead of the advertised drum brake. The caliper brakes were unusable because the lever and cable dragged and bound, but because I was in a hurry to use it I bought a new cable and hand lever which solved the problem. In order to handle the folded trike I attached a bunge cord to keep it folded.
The tricycle keeps me from getting pulled over by this 17lb pup.I really need the three speed when he stops get and leave his P-Mail on hills. The basket holds a medium sized pet bed, water, treats and maybe Buster if he ever gets tired enough! We've met many new two and four legged friends, being a unique site in the neighborhood.It took about two hours to assemble myself. It would have been one if I had followed the directions more precisely.
Trike is great for fairly flat and smooth surfaces in a RV park. Added a handle bar basket for our small dog and wife enjoys tooling around parks with the dog. Did not find any problems with assembly, i.e. all parts aligned and went together as they should. Two negatives are its weight (hard to lift on to bike rack) and stability if going fast and turning (it is a trike with a fairly high center of gravity so could tip over).
bike assembly is real easy bike rides real good and comfortable.one problem is my front tire cover or fender is gray shouldhave been chrome plated. also recieved front wheel with caliperbrakes should be drum brake as noted on product description.Called factory and I  was able to get a front wheel with drum brake.I Love my bike well built and it is MADE IN THE U.S.A.
]Took the bike out for the first time yesterday, spent most of the day riding it and it was easy to handle, went over both pavement and gravel with ease.
Worksman Port-O-Trike should have been a nice bike. I ordered it so my daughter could safely transportport her 1 year old  daughter to local stores in her small neighborhood in Broomfield Colorado. I had read previous reviews where the bike arived missing parts. I took a chance. Sure enough, it arrived missing some key pieces keeping my daughter from completing the assembly. She has no car and this was an important investiment.
Answer: yes