TASK DEFINITION: Given the Question and Answer pair, detect whether the answer is acceptable or not. Denote acceptable answer as "yes", otherwise denote as "no". An acceptable answer is consistent with the context in question, detailed, long, and uses general knowledge of English. Answers that are not definite and suggest a variety of options are not acceptable answers.
PROBLEM: Question: First of all, I am not a native English speaker and not very good in English too. I had a technical problem in my software project and thus took help of somebody. She helped me to find the right way to resolve my issue. Can I say her, "You are a path shower" to show my appreciation to her ? UPDATE: She always guides me when I am in trouble. Considering this, what more can I say her. 
Answer: Most of these answer are so very flowery! I would simply go with "thanks for your guidance". It's appropriate for both formal and informal settings (unlike several of the other answers...), and straightforward. You could even flash it up: "thanks for your consistent, excellent guidance on this project" and keep it not too "puppy on the heels".

SOLUTION: no

PROBLEM: Question: What is the shortest comprehensive sentence in English? 
Answer: "Go." The understood subject is "You". "[You] go" makes sense to me.

SOLUTION: yes

PROBLEM: Question: I am looking for the term describing when your hair grows kind of in a circular direction (defined by the direction of your hair root). Many people have something like this on the back of their heads or even on their foreheads. I found the term hair crown on dict.cc but I feel like this is either not the correct term for it or it is not very widely used. There is a German article on human hair including a section about these things but I could not find the English equivalent. In German, these are called Haarwirbel meaning something like hair whirl. 
Answer: When I was younger, I learned that my guinea pig's splayed hair growth were due to "multiple hair crowns." I looked it up today on Wikipedia and the term rosettes is used: The Abyssinian is set apart from other guinea pigs by its unique coat. The hair of an Abyssinian is approximately an inch and a half long and is marked with swirls of hair known as rosettes.

SOLUTION:
no