source: Google subsequently made the comic available on Google Books and their site and mentioned it on its official blog along with an explanation for the early release.
target: The comic is available on Google Books.  It was mentioned by Google on its official blog with an explanation for its early release.
references: The comic is available on Google Books.  It was mentioned by Google on its official blog with an explanation for its early release. Google Books has the comic. They mentioned its release on their blog. Google later made the comic available on Google Books.  The website mentioned it on the official blog and gave an explanation for the early release. Google released the comic early on Google Books. The comic was available on Google Books as an early release. Google put the comic on Google Books and on its blog. Then they told why they gave it out early. Google made the comic for people on Google Books and their site named it on the official blog telling about the early release. Google then made the comic available on Google Books and their site and mentioned it on its blog along with an explanation for the early release. Google then made the comic available on Google Books. It was also mentioned on the official blog. Google made the comic available and mentioned it on its official blog along with an explanation for the early release.