Example sentences of "[been] found to [be] a [adj] " in BNC.

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1 The dipper , a small bird that feeds underwater in fast-flowing streams , has been found to be a good indicator of water acidity , Studies in Scotland by Dr Juliet Vickery of Oxford 's Edward Grey Institute of Field Ornithology found a clear correlation between acidity in a stream and dippers ' breeding success .
2 In many large series of critically ill patients sepsis has been found to be a major determinant of mortality .
3 In your advert give the name of the person to whom the reply is to be made since this has also been found to be a positive factor in encouraging people to reply .
4 The defendants argued that the proviso could not be severed and that as it had been found to be an unreasonable restraint of trade the whole of the clause was void .
5 Smoking has been found to be an important factor , increasing this loss of bone density and resulting in an increased risk of osteoporosis [ 13 ] .
6 Empirically , the assumption of constant interest rates has usually been found to be an acceptable approximation .
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