Example sentences of "[adj] [pron] be believed that " in BNC.

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1 In 1975 it was believed that a large fleet of supersonic aircraft flying at altitudes up to 25 km would have a ‘ noticeable effect ’ on the ozone layer ( World Health Organization , 1976b ) .
2 While yesterday 's purchase price was kept confidential it is believed that Mr Arkley paid between £150,000 and £200,000 for each of his new pubs .
3 i It is believed that the government and the tobacco industry are on the verge of signing a new voluntary agreement , according to a report in Marketing .
4 Up to 1956 it was believed that the laws of physics obeyed each of three separate symmetries called C , P , and T. The symmetry C means that the laws are the same for particles and antiparticles .
5 During 1990 it was believed that the strength of the NPA had fallen to around 19,000 compared with 25,600 in 1988 , as a result of the continuing success of the armed forces in disrupting and demoralizing the guerrillas by targeting the movement 's leadership .
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