"factual role" is a correct phrase and can be used in written English.
For example, you could say: "He took on a factual role to help provide accurate information."
Although controversy over the factual role of oxidative stress in affecting viability but also reproductive output and other life-history traits is still ongoing, a large body of evidence from captivity studies on 'model organisms', such as nematodes, insects and rodents indeed strongly advocates a major impact of detrimental oxidation processes (see [44], [45]).
The aim of the present study was to reveal the factual role of ID4 in carcinogenesis in more detail, since its role for the pathogenesis of human breast cancer has been discussed controversially, assigning both oncogenic and tumour suppressive functions.
It is understood that Sue Murphy - managing director of the maker of many of Gordon Ramsay's shows Optomen - is to take one of the factual roles created after Lygo separated out Klein's job out into factual and factual entertainment.
Previously, she was the BBC's commissioning editor for features and factual entertainment, a role in which she oversaw The One Show.
Marr, 53, was previously the BBC's political editor and the editor of the Independent before becoming one of the BBC's best-known factual presenters, a role that has seen him front histories of modern Britain and the Queen's reign.
MediaGuardian reported earlier this month that Channel 4 was lining up Ralph Lee, the head of specialist factual, for the new role of head of factual as part of a restructure following Mykura's departure.
I believe you should concentrate on the simple, factual point that your role changed.
The ads will draw attention to a booklet being sent to voters in each police election area - containing "factual" information about the role of police commissioners, how voters should fill in their ballot papers and details of the website and phone number from which people can get candidate information.
In this regard, patients associations could play a crucial role, disseminating factual information and encouraging participation in trials.
In a very contemporary way, however, Flockhart and Downey were offering viewers two roles simultaneously: factual and fictional.
Therefore, the sentence selection has been performing a pioneer role in automatic factual question generation task.
