Mikel Jon Obi, Arjen Robben and Wright-Phillips were struggling to get in the game and Norwich, with Etuhu and Darren Huckerby to the fore, were posing problems.

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Documents are posing problems for people, too.

ECONOMIST: The security forces rehearse their exercise routine

This may obscure deeper relationships hidden in the data, posing tricky problems for statisticians.

ECONOMIST: Economics focus

Roy O'Donovan's pace was posing plenty of problems and Jones was a constant menace in the air.

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Some of that polluted runoff winds up in drinking water, posing special health problems for children and pregnant women.

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Water problems will hinder the ability of key countries to produce food and generate energy, posing a risk to global food markets and hobbling economic growth.

FORBES: Water Risk Threatens Businesses, National Security