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: Do you need to wrap the pipe w/ teflon tape when screwing it on?
Document: In the old days 2.8 to 3.0 gallons per minute was considered optimal for shower heads. That's what you need to get the shampoo out of your hair. Today however, know-it-alls in Washington think they need to force us to &#34;save&#34; water by mandating only 2.5 gallons per minute for shower heads, and that is what this little gem delivers.
Works as expected and looks great. It was easy to install and the different jet positions work as advertised.Thanks.
We love it! We were able to replace the old one quite easily and really like the various setting options! Would highly recommend!
We had one of these in our previous home and it worked great for us. Nice medium-intensity shower and useful options in settings. Does seem to not lime up as quickly as some we've had.
Unfortunately, my bathroom has all polished brass fixtures and towel racks. It was nice when it was done, but polished brass is not in fashion anymore, so it's very hard to find pieces to match. I was happy to see this showerhead, because my old one had become quite clogged. The truth is that I don't use the 7 settings. I found the one I like and it stays on that setting most of the time. Anyway, it's a great showerhead, and looks very nice.
This shower head works great. Would be 5 stars with more pressure but alas no. I do like the options.
This shower head works great, puts out enough volume, yet not a fire hose. If you like to feel volumes of water and a reduced rate...this is for you. Like them so much I put them on all the showers.
This shower head has a decent number of flow options, it was easy to install, and it looks good with the other brass-tone fixtures in my somewhat-outdated bathroom.
This product was very easy to install. I love the seven setting and works very well. I would recommend it.
This is a great showerhead for the price. It has good settings, good water pressure and is good quality. Buy it!
Answer: no