What is this "nekoya" shop advertising?
Image source: http://tokyo-oasis.blog.so-net.ne.jp/2009-10-13, used without permission
I've seen on twitter a photo of a cat carrying a shamisen, with the text ねこや ("nekoya", literally "cat shop"). There's a phone number underneath of (351) 1647. The store's address is 3-6-4, yotsuya, shinjuku-ku, Tokyo (source)
What is the shop selling? Is it selling shamisens (as apparently claimed here) which are traditionally made using cats, a cat cafe, or something else?
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What does " mean in HTML?
And then " is the translation to HTML of the double quote characters (you must be attempting to output into a web page). See HTML codes.What does < mean in HTML?
< stands for lesser than (<) symbol and, the > sign stands for greater than (>) symbol . For more information on HTML Entities, visit this link: https://www.w3schools.com/HTML/html_entities.asp.What does &# xA mean?

 is the HTML representation in hex of a line feed character. It represents a new line on Unix and Unix-like (for example) operating systems.Can be escaped with &apos?
If you need to write semantically correct mark-up, even in HTML5, you must not use ' to escape single quotes. Although, I can imagine you actually meant apostrophe rather then single quote. single quotes and apostrophes are not the same, semantically, although they might look the same. Here's one apostrophe.ISEKAI SHOKUDOU / OST / MAIN THEME
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Images: Angela Roma, Angela Roma, Amina Filkins, Creative House