1. Cameroon was plunged into grief by the sudden death of the midfielder, an unsung hero of the country's dominant position in African football over the last decade.
2. Weis called the clerk the " unsung hero " of the case.
3. Weis saluted the unidentified New Jersey store clerk who noticed the suspicious video as the " unsung hero " of the case.
4. Energy conservation is an unsung hero in the global effort to burn fewer fossil fuels and buildings account for roughly half of global energy consumption.