In this task, you're given a sentence and your task is to generate a simplified sentence that focuses on lexical paraphrasing from the original sentence given in the input.

Q: riaa website although total worldwide album sales are not calculated by any single entity , as of 2004 several industry sources estimated rush 's total worldwide album sales at over 40 million units.

A: although total worldwide album sales are not calculated by any single entity , as of 2004 several industry sources estimated rush 's total worldwide album sales at over 40 million units.
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Q: telephone cables ran through the tunnels , down the cliff and under the harbour to batteries on the other side.

A: telephone cables ran through the tunnels , down the cliff and under the harbor to batteries on the other side.
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Q: it has long been the economic centre of northern nigeria , and a centre for the production and export of groundnuts.

A:
it has been the economic centre of nigeria and a centre for production and export of groundnuts.
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