The phrase 'the content of which' is a perfectly acceptable and commonly used phrase in written English.
It is used to refer to the content of a specific thing. For example: The article was long and detailed, the content of which was carefully researched and fact-checked.
the content of which enraged me.
Reagan offered the country an optimistic vision of the future the content of which was borrowed from the past.
Another was a habit of rather dreadful, somewhat unfunny mimicry, the content of which got back to the victims.
The next-longest section is the one heading to auction later this month, the content of which is "fairly crucial", said Geiger.
Federal filings show that Mr. Brown's group has spent more than $60,000 for a direct mail campaign, the content of which he would not share.
THAT RUSADA continue to offer and organize anti-doping courses for coaches, officials and athletes, the content of which shall be approved by Wada.
Winter food for farmland birds can be enhanced by planting seed-rich 'winter bird crops' (WBCs), the content of which is highly variable.
In concept mapping, thoughts and ideas are represented in the form of a picture or map, the content of which is determined by a group of stakeholders.
It is an exercise in rationality, but its energy comes from the ideas in the minds of power figures the content of which, as well as their origins, are only dimly perceived.
Narcissism: This may just be another bugbear of mine, but many companies insist on producing infographics about themselves – the content of which fails to interest 99% of the audience.
In September 1913 she sent and then swiftly retracted, through an intermediary a more personal letter, the content of which is now lost.That autumn Fournier bounced between two married women.
