This post is for future posts.

Check the lines 5 to 9 of my post template head.html.

    <meta name="generator" content="blogger"/>
    <meta name="author" content="Sau-Chin Chen"/>
    # A if-then loop imports page.title.
    <meta property="og:title" content="Template of a citable blog post"/>
    # A if-then loop imports page.date.
    <meta property="article:published_time" content="May 5, 2017"/>
    <meta property="og:site_name" content="Sau-Chin Chen's website"/>