This is the 9780th most frequent Russian word.
эрнста
"Эрнста" is the genitive or accusative case of "Эрнст," a male given name "Ernst" in English.
Э́рнста is used here as the genitive case of the name Эрнст, indicating possession, translating as Ernsta's.
Я читал интервью Э́рнста вчера.
I read Ernsta's interview yesterday.
Эрнста functions in the genitive case to indicate association or ownership of the plans.
Планы Эрнста действительно интересны.
Ernst's plans are truly interesting.
Эрнста denotes possession in the context of the project, showing whose project is being discussed.