But the examination was unable to establish whether measles was the main cause of his death.

BBC: Gareth Williams

"We are unable to establish any basis whatsoever for the 16.5% figure, " an outside performance review concluded.

FORBES: Financial Watchdog

An inquest at the time was unable to establish how she had come to have Midazolam in her body.

BBC: Nurse 'killed colleague after drugging her'

Certainly the two schools are quite close together but we are unable to establish any connection between the cases.

BBC: Precautions follow meningitis deaths

Farrow told Dr Bond he was unable to establish any meaningful relationships.

BBC: Stephen Farrow 'the psychopath'

The Swansea coroner's office said on Thursday that the examination was unable to establish whether measles was the main cause of his death.

BBC: Vaccination in Neath Port Talbot

Due to the length of time James Fenton's body had lain undetected, a post mortem examination was unable to establish how he died.

BBC: Police disciplined over James Fenton investigation

Investigators have been unable to establish why a mayday call was made from a helicopter before it crashed in Lancashire, killing two people.

BBC: Mystery over Lancashire crash helicopter's mayday call

Fred Allen, one of the many radio greats who was unable to establish himself on TV, groused about his failure in "Treadmill to Oblivion, " his 1954 autobiography.

WSJ: WSJ Sightings: Terry Teachout on the New-Media Crisis of 1949

The BBC was unable to contact the directors of CTB to establish whether it is linked to the Continental Trust Bank or Continental Trust Brokers.

BBC: NEWS | Business | Bank scam comes to the Highlands

Some scientists say that tree species unable to tolerate warmer conditions might just re-establish themselves in cooler areas.

CNN: Global warming threatens forests, study says