What is the constraint for node 2 in the following maximal flow problem? 
Definitions:
Structures and Systems
The organized frameworks and processes within which activities are carried out in an organization to effectively achieve its goals.
Planned Change
Intentional and systematic efforts to transform an organization or specific aspects of it, typically involving structured processes and strategies.
Change Agent
Tries to change the behaviour of another person or social system.
Performance Gap
A discrepancy between the desired and actual state of affairs.
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