Example sentences of "to have been cause [prep] [noun sg] " in BNC.
Next page| No | Sentence |
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| 1 | He has also examined the well-publicised cluster of leukaemia cases around the Dounreay nuclear plant and concludes it is likely to have been caused by exposure to incoming oil workers rather than radiation from the plant . |
| 2 | Symptoms were unchanged in 7% of patients and therefore were unlikely to have been caused by gall stones . |
| 3 | The report looked specifically at the cluster of cases around Dounreay and concluded that they were most likely to have been caused by oil workers rather than emissions from the nuclear plant . |
| 4 | The problems of all five aircraft were thought to have been caused by fuel with a low octane level . |
| 5 | Sharks , killer whales , and false killer whales are believed to present some threat to dolphins - scar marks thought to have been caused by shark attack have been observed . |