How to split with space except one word

[Cream_17]

Hello everyone, I`m newbie in this forum, so I`m so sorry if I'm still not used to the way of communication in this forum.

【So the problem which  I want to discuss is】

→I need to separate/split the given sentence into single word by "space", but I don`t want the same treatment applied to any phrase begin by word "not"

【Exemple】

【Desired output】

the AC is not working : (the) (AC) (is) (not working)

the motor is not going well : (the) (motor) (is) (not going) (well)

I really appreciate to anyone who can help me solve the problem

[Cream_17]

Dear Jakinta

Thanks for you response, you solved my problem

[Jakinta · Accepted solution]

You can apply steps below after your last step.

    Replaced = Table.ReplaceValue(PreviousSteName,"not ","not_",Replacer.ReplaceText,{"commentar"}),
    Split = Table.TransformColumns(Replaced, {{"commentar", each Text.Replace( "(" & Text.Combine( Text.Split (_, " "), ") (") & ")", "_", " "), type text}})
in
    Split