The phrase "a contention that" is correct and usable in written English.
It can be used when introducing a claim or argument that someone is making about a particular topic or issue.
Example: "The author presents a contention that climate change is primarily driven by human activity."
Alternatives: "an assertion that" or "a claim that".
She blames the mine for making water scarce, a contention that could not be verified.
He maintains that he did not know that it was illegal under Cuban law for him to be paid by the US to distribute equipment in Cuba – a contention that continues to draw scrutiny.
The state, of which Hyderabad is the capital, severely restricted lending after politicians criticized SKS and other microlenders of being too aggressive in collecting repayments from impoverished families and driving some borrowers to suicide — a contention that lenders strongly deny.
The day was defined by a cluster of f-bombs, a contention that Martin used a sidewalk as a weapon, a heavy-lidded defendant, and a knock-knock joke.
The knockout blow came when alarms raised by advocacy groups and by class action lawsuits led to fears that Lymerix might cause arthritis or other severe damage, a contention that is widely debunked by vaccine experts.
It assumes that there is a block of votes of ethnic minorities that can be unified to impact an election result; a contention that is not supported by any evidence.
Mr. Gillis said parts that carried his organization's seal were just as good as parts from G.M. and other manufacturers, a contention that will be an issue in the class-action trial.
After rejecting Hutcheson's appeal to an aesthetic sense as a deus ex machina that forecloses inquiry, Mendelssohn contends that the common feature is a sensuously perfect representation (a contention that can be traced back to Sulzer and Baumgarten).
It is a contention that is prima facia absurd.
It is a contention that has received greater attention in recent years.
It has been proposed that the sopE cassette was transferred between bacteriophage families by homologous recombination [ 69], a contention that is supported by our observation in S. Virchow.
