The phrase "a clear call of" is correct and usable in written English.
It can be used when referring to a distinct or unmistakable request or demand for action or attention.
Example: "The speaker made a clear call of unity among the community members during the event."
Alternatives: "a clear demand for" or "a distinct call for".
"It's a clear call to action," says Gina Solomon of the Natural Resources Defense Council, a member of the EPA advisory board panel that examined TCE.
There is a clear call for the capture and trial of suspects who may have been involved in genocide or crimes against humanity in recent years.
A clear call to action read by millions of people could give you a huge boost in business.
Otherwise, there would have been a clear call to assess inter-rater reliability of findings.
52 This is a clear call for urgent development and expansion of non-insecticide-dependent tools for vector management, such as larvivorous fish and source reduction, as used as part of India's Urban Malaria Scheme.
The morning after Eisenhower had agreed to answer a clear call we got a taste of excitement that already stirs the country in its Presidential year.
"You are such a diva," Ms. Rhea exclaimed, in what some might call a clear case of the pot calling the kettle noir.
One tenant, in a clear case of overreaching, called Mr. Bradley from out of town when he realized that Tropical Storm Irene was ready to wreak havoc.
Furious at what he is calling a clear case of trademark infringement, Mr. Emeritus said that he has no intention of stepping aside for the former pontiff: "He's the one who should step aside.
Living under what are described as apartheid-like conditions – the UN calls it a "clear case of segregation" – some are allowed to leave under escort just twice a week to access the market where they used to trade.
