Example sentences of "known to have [vb pp] [prep] [adj] " in BNC.

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1 This is why Domesday Book does not refer to many churches which are known to have existed from other evidence .
2 Despite their displaying a generalised and largely self-sufficient subsistence economy , precious metals and other valuable goods are known to have moved between such communities .
3 There are some notes where incomplete airframes have been listed and those that we have tagged ‘ Airworthy ’ indicate that the aircraft are known to have flown in recent years .
4 His successor , Leo VIII was little better ; he died while committing adultery , the only pope known to have expired in this way .
5 The purist may , however , still balk at the idea of a negative-energy field , even though to date the C- field is not known to have led to any conceptual difficulty either in classical or quantum physics .
6 i Should be located where the exhibition can be supervised , if only to avoid the material being stolen ( known to have happened to one of the Green Belt min–exhibitions ) ;
7 He may already by then have become the abbot 's steward , a position he is known to have held in 1254 and apparently retained until 1259 .
8 Of the 97 men known to have seroconverted during 1989–91 28 ( 29% ) were aged under 25 .
9 The focus of the paper is the 147 cricketers known to have died from unnatural causes ( excluding suicide ) .
10 ( Even in the cause of evasion , Aveling was not known to have spoken to any workers during the course of his tour . )
11 Both victims had been shot a number of times by an antique revolver known to have belonged to one of the victims .
12 The number of reported seroconversions has risen steadily since 1986 ; the number of cases in which transmission of HIV-1 was known to have occurred during 1990–2 ( 157 ) was more than double the number recorded during 1987–9 ( 74 ) .
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