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.

Question: This is similar to a palindrome but, instead of a word/sentence that reads the same forwards and backward, is there a word for words/sentences that read the same right side up and upside-down? See picture below where the word "yeah" is written in cursive:
Answer: Another answer is symmetric, although that's a broader term. More specific: that it has rotational symmetry. Even more specific: symmetric under a 180 rotation, or it has 180 rotational symmetry. A mathematician might say that it has the symmetries of a parallelogram.
no

Question: I have been using the term ofcourse ever since kindergarten. However, I recently stumbled upon a site that claims of course is how the term is correctly used and not ofcourse. I would like to seek the community's opinion about which is the correct usage of that term.
Answer: "Of course" is two words. I have never seen it as one except in typos and this question.
yes

Question: What is the difference between "parentheses" and "parenthesis"?
Answer: Parenthesis is of course Greek and means in fact "insertion". It has taken the meaning of the signs " ( " or " ) ". Parentheses is the regular plural. Usually, you use a pair of the signs showing an insertion, then "between parentheses" - or brackets ; however, "in parenthesis" means : as an afterthought.
yes