Telling a commentator flogging a product online to disclose commercial ties does not constitute a challenge to free speech.
A revolution constitutes a challenge to the established political order and the eventual establishment of a new order radically different from the preceding one.
The militias are a security threat in Darfur and they also constitute a challenge to Khartoum – they don't obey the rules and have differences with the government over entitlements and payment.
Fawning over the founders is hardly a 21st-century phenomenon, but it does constitute a challenge to the conventional wisdom in the academy, where historians have visited upon the founding fathers the sins of the sons: the bloody Civil War, the disenfranchisement of women, the follies of empire.
The current demand for customization, flexibility and responsiveness constitutes a challenge to achieve intelligent and adaptive manufacturing systems.
The high values of mass loss rates and high terminal velocities of the WR stellar winds constitute a challenge to the theories of radiation driven winds.
Exactly how and to what extent the connectionist paradigm constitutes a challenge to classicism has been a matter of hot debate in recent years.
However, the development of strategies to understand and imitate such events constitutes a challenge to design novel enzymes in the laboratory.
The high cost and energy intensity of virgin carbon fibre manufacturing constitute a challenge to recover substantial value from carbon fibre reinforced polymers (CFRP).
