The phrase "ago based on a" is not correct and does not make sense in written English.
It seems to be an incomplete or improperly structured phrase that lacks clarity and context.
Example: "The event happened a long time ago based on a previous discussion."
Alternatives: "in the past according to a" or "previously based on a".
He rejected state socialism as a "dull" and "illogical" doctrine, "little better than a dusty survival of a plan to meet the problems of fifty years ago, based on a misunderstanding of what someone said a hundred years ago".
I set up a Yahoo account once years ago, based on a variation of my name, for its news tickler, but never used it for e-mail". Regarding Carlson, Brantley said that he'd crossed paths with him years ago when Carlson was working for the Arkansas Democrat-Gazette.
You'll recall that a few weeks ago, based on a segment from the Opie and Anthony show, we wondered aloud what kind of "Happy 2010!" glasses were going to make the rounds come December 31.
It was a style I'd settled on years ago, based on a hairstyle I had once, for about two weeks.
Researchers have previously thought that Ectobius first evolved in Europe and Africa, scuttling around the region since at least 44 million years ago, based on a specimen preserved in Baltic amber of this age.
So I am beholden to people like Richard Dawkins for puncturing Young-Earth creationists who want to defend the idea that the Earth was created only a few thousand years ago, based on a funky (and quite modern!) reading of Genesis.
This month, Garret Graves, chairman of the state's Coastal Protection and Restoration Authority, said "the decision to cut funding for the Christmas tree program was made more than a year ago based on recommendations from a government streamlining commission, with input from ten to twenty meetings that included the public, good government groups and legislators".
This witchy account is run by Jamie Mooers and Bill Crisafi, who developed a friendship over a decade ago based on "their mutual fascinations with occultism, magic, spirituality and a deep nostalgia for old New England".
The firm built up a reputation as an up-and-coming early-stage investor a few years ago, based on bold bets on virtual reality, a flashy marketing strategy and its well-connected namesake and founder, Mike Rothenberg.
Researchers first reported the detection of methane in the Martian atmosphere a decade and a half ago based on measurements by Mars Express and telescopes on Earth.
The argument was first advanced by Charles Murray 20 years ago, based on the supposed rise of an underclass in America.
