Hi Illippu, I suspect you are nearly there. But you are wrong with 'four word".
The framework is five letters, spelt out by the first part of revealed (extra letter) instruction.
The second part of the framework might look like gibberish until you remember a familiar childhood mnemonic, which (and I hope this is not too much of a giveaway) includes the word "fruit".
From there on in it's just a hard slog with a magnifying glass and a bit of Googling...
I hope this helps, but I do worry I just make things more difficult for everyone by trying to be over-subtle!