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 computing , a crash , or system crash , occurs when a computer program such as a software application or an operating system stops functioning properly and exits .

SOLUTION: A Computer crash is when a computer program stops running normally .

PROBLEM: Many grevilleas have a propensity to interbreed freely , and extensive hybridisation and selection of horticulturally desirable attributes has led to the commercial release of many named cultivars .

SOLUTION: Many grevilleas interbreed freely , and some specially picked hybrids have been grown for sale .

PROBLEM: Freyberg had informed his superiors that he believed , given the circumstances , there was no better than a 50 per cent chance of success for the offensive .

SOLUTION:
Freyberg thought there was only a 50 % chance of success for the attack .