Sentence:  Unfortunately, some of our young people have come to the conclusion that <WSD>koha</WSD> as a system is out of date. Several times I have heard it said by young people that they are going to a hui but, not to worry, the Government will fund it. ... I believe that we ought to be attending hui, and ought to make contributions by way of <WSD>koha</WSD>. 
Meaning of the word marked with <WSD> tags:  A voluntary donation given for a service that has been provided.