Example sentences of "[adv] [adj] [be] believed to [be] " in BNC.

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1 In the stratosphere , the rate-limiting step in the oxidation chain leading to the conversion of SO 2 to H 2 SO 4 is believed to be the reaction of SO 2 with OH .
2 Based on information from police and village heads , some of the 66 people still missing were believed to be dead ( although no other graves had been discovered ) , while the rest were reported to have joined a " trouble-maker group " which was said to be in hiding , according to an ABRI official .
3 At least half are believed to be switched off by remote control every night .
4 Official projections of the spread of Aids have mercifully been revised downwards , but around 50,000 are believed to be infected in Britain , and the disease is pandemic in parts of Africa .
5 Much of this comes from small landowners , and at least one-third is believed to be being felled illegally , without the permission of the state forestry corporation , Conaf .
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