Example sentences of "think to have been cause [prep] " in BNC.

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1 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 .
2 Similar pores have been observed also in the Z1 Carbonate of the Auk ( Brennand and van Veen 1975 ) and Claymore fields and in outcrops of Zechstein carbonates in the U.K. , where leaching is thought to have been caused by meteoric water during uplift and exposure ( Clark 1980a ) .
3 At first the explosions were thought to have been caused by a gas leak , but gradually the police were able to piece together evidence linking the disaster to the Weathermen , one of whom had attached a wire to the wrong terminal .
4 Fergie 's ill temper was thought to have been caused by an argument on the telephone with Texan pal Johnny Bryan .
5 The problems of all five aircraft were thought to have been caused by fuel with a low octane level .
6 A car and the garage in which it was parked at a house in Filey Road , Scarborough were gutted by a fire thought to have been caused by an electrical fault on the vehicle .
7 A car and the garage in which it was parked at a house in Filey Road , Scarborough were gutted by a fire thought to have been caused by an electrical fault on the vehicle .
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