TASK DEFINITION: In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.
PROBLEM: In mathematics , a power of two is a number of the form 2 where n is an integer , that is , the result of exponentiation with number two as the base and integer n as the exponent .

SOLUTION: In mathematics , a power of two is any number which is an integer power of two .

PROBLEM: Cognitive neuropsychology is a branch of cognitive psychology that aims to understand how the structure and function of the brain relates to specific psychological processes .

SOLUTION: Cognitive neuropsychology is a subject in psychology .

PROBLEM: However the genre remains a very small proportion of the pornographic DVD market ; for example at porn retailer HotMovies.com , there are only 655 bisexual titles out of a catalogue of more than 90,000 films .

SOLUTION:
For example , at porn seller HotMovies.com , there are only 655 bisexual movies out of a showing of more than 90,000 movies .