"I learned that František had died."

Translation: Dozvěděl jsem se, že umřel František.

[Sammka]

I can't report this as an error because it's just being classified as a typo, but I answered "Dozvědela jsem se..." and they marked it as a typo. It should be accepted as correct.

[tylerskarz]

I think Dozvědela should be Dozvěděla.

[OndrejSaska]

What about "Zjistil jsem, že František umřel"?

[ChristophS49077]

I am not a 100% sure, but I think that'd mean you felt his pulse and declared him dead.

[VladaFu]

Not necessarily. zjistil jsem = I found out