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

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1 ( The asbestos had been built into the carriages to act as sound and heat insulation , but had of course later been found to be a health hazard . )
2 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 .
3 More scientifically , variety has been found to be a factor in influencing the quantity of food we desire .
4 It has also been found to be a source of one of the major ingredients of the contraceptive pill .
5 When schematic drawings of faces have been used as stimuli visual hemifield asymmetry has been found to be a function of several factors , including the degree of similarity between the stimuli to be compared and the inter-stimulus interval employed ( Patterson and Bradshaw , 1975 ) .
6 In many large series of critically ill patients sepsis has been found to be a major determinant of mortality .
7 The annual grass Lolium temulentum is a close relative of ryegrass and , for reasons of genetic uniformity and simplicity of life-cycle , has been found to be a much more suitable subject for fundamental studies of growth and development ( , , ) .
8 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 .
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