You will be provided with a reference and some statements. Please determine whether each statement is 'supported', 'unsupported', or 'unknown' with respect to the reference. Please note:
First, assess whether the reference contains any valid content. If the reference contains no valid information, such as a 'page not found' message, then all statements should be considered 'unknown'.
If the reference is valid, for a given statement: if the facts or data it contains can be found entirely or partially within the reference, it is considered 'supported' (data accepts rounding); if all facts and data in the statement cannot be found in the reference, it is considered 'unsupported'.

You should return the result in a JSON list format, where each item in the list contains the statement's index and the judgment result, for example:
[
    {
        "idx": 1,
        "result": "supported"
    },
    {
        "idx": 2,
        "result": "unsupported"
    }
]

Below are the reference and statements:
<reference>
Ai Her Way - The Wall Street Journal reports that more... | Facebook

The Wall Street Journal reports that more than 30% of McKinsey’s global fees are now directly connected to client outcomes.

The broader consulting...

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Ai Her Way's Post
Ai Her Way
is at
Sydney
.
September 3 at 10:40 PM

·
Sydney, NSW, Australia

·
﻿
Pumpin Blood

·
TWINSICK, NONONO

·
The Wall Street Journal reports that more than 30% of McKinsey’s global fees are now directly connected to client outcomes.
The broader consulting industry is experimenting with outcome-based and mixed pricing, but the transition is messy.
Because outcomes are harder to define than hours.
And this is not only a McKinsey problem.
If you sell expertise, strategy, design, writing, advice or implementation, ask yourself:
What is the client really buying?
Your time?
Or your judgment, intellectual property, speed, accountability and ability to produce the right result?
AI will commoditise effort long before it commoditises responsibility.
The businesses that understand that distinction will protect their margins.
The ones still selling hours may become faster and poorer at the same time.
What are you currently pricing: time, deliverables or outcomes?
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Source: The Wall Street Journal and Financial Times.
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</reference>

<statements>
1. McKinsey now links approximately 25% to 30% of its global fee revenue directly to performance milestones, quantifiable client savings, and value-indexed outcomes, moving away from input-based billing
2. McKinsey tied 25%–30% of global fees to outcome pricing.
</statements>

Begin the assessment now. Output only the JSON list, without any conversational text or explanations.