whoever knows the name of this song will receive a prize fro

whoever knows the name of this song will receive a prize from tile radio station.
一句句子不能有两个谓语动词,该句中的谓语动词是will,故主语是whoever knows the name of this song,
若要用anyone,可以写成Anyone who knows the name of this song will receive a prize from tile radio station.这样Anyone who knows the name of this song作主语

如果把whoever换成anyone，那么anyone在句子中只能做主语了。而在整个句子中，whoever knows the name of this song作主语。whoever引导主语从句。
不知道是否解释清楚了