Example sentences of "because [pron] [is] thought [that] " in BNC.

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1 The problem arises because it is thought that the positional errors and attribute uncertainties which are characteristic of all spatial databases , may be propagated and amplified by GIS operations and thus adversely affect some or all applications .
2 In Texas , farmers encourage feral pigs ( which are also hunted — on horseback , with the assistance of specially bred ‘ hog dogs ’ ) because it is thought that they eradicate snakes .
3 Meteorites are studied in the laboratory because it is thought that their chemical composition is showing us quite accurately the chemical composition of the Solar System at the time of its formation .
4 But if its harmful effects are ignored because it is thought that they are too generalised , too subjective or too difficult to tackle , then unnecessary ill-health will continue to occur .
5 There is a tendency to make sentences unnecessarily complex , perhaps because it is thought that a convoluted structure makes them seem more formal .
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