Example sentences of "[conj] [is] think to be [adj] " in BNC.

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1 But they tend to diverge into two types with respect to the information about features that is thought to be important .
2 The enzyme progastricsin , is present in 30–40% of gastric adenocarcinomas and is thought to be useful in differentiating between colonic and gastric adenocarcinomas .
3 This has been generally well received and is thought to be helpful and informative on matters of chambers administration .
4 This trophy , whose origin is unknown but is thought to be contemporary with the arrow , was presented by the Society of Gentlemen Archers of Darlington in 1830 .
5 The reason for this is not known but is thought to be due to infection by the virus itself .
6 The etiology is unknown , but is thought to be due to the dissolution and aspiration of dead or dying worm material into the alveoli .
7 These show that every publication has a class number consisting of at least three digits , but the system permits further sub-divisions allowing as fine a division as is thought to be necessary .
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