Example sentences of "have been known to [art] " in BNC.

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1 It has been known to the West since the 17th century .
2 It can be speculated that the informants recruited in Operation Ward may have been known to the IRA for months or even years .
3 None of these facts , Simone pointed out , could have been known to the healer she consulted in Canterbury .
4 The fact that the US was canvassing support from other Asian states would very likely have been known to the Russians and Chinese ; and it is at least conceivable that this fact influenced their own decision .
5 Many of the children will have experienced poverty and insecurity , if not actual neglect , and may well have been known to the health or education authorities as children at special risk before they come into the care of the social services department .
6 Oliver North to Iran , travelling on Irish passports , to organize the sale of TOW missiles and launchers to the Iranian government in exchange for the release of American hostages ; details of money transfers and bank accounts , with dates and places — most of it based on incidents and conversations that could only have been known to the Iranian or American negotiators .
7 ( 3 ) The estate of a partner who dies , or who becomes bankrupt , or of a partner who , not having been known to the person dealing with the firm to be a partner , retires from the firm , is not liable for partnership debts contracted after the date of the death , bankruptcy , or retirement respectively .
8 This was obviously untrue since Blake's-arrest had been known to the Russians for several weeks .
9 The third case was impossible to assess , for Mrs Kitchener 's daughter did not want to be interviewed again , but the development officer 's account at a time when Mrs Kitchener had been known to the project for about a year gives some indication of the situation :
10 Atomic fission had been known to the general public for a decade ; the awareness of fusion bombs was only four years old , so the possibility of a ‘ third and revolutionary way to produce a nuclear reaction without uranium , as in the fission reaction , or million degree heat as in the fusion reaction ’ generated a lot of excitement .
11 But the other barbarians — Egyptians , Persians , Babylonians and even Indians — had been known to the Greeks for centuries .
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