@craigrut and @half_wasted,

OK... have just put in some quick changes to help with these issues: (1) the spacing issues with pinyin input are fixed, (2) for definitions split by a comma or semi-colon, providing either of the listed definitions is sufficient, (3) for arbitrarily long words, we'll now mark your answer as correct if what you provide is a long enough exact match against a portion of the correct answer.

Hopefully these will make the generative exercises a bit less frustrating by avoiding marking answers as incorrect when people really know them and it is just an input issue.