well, as you know, i'm quite busy with applying myself to doing things to make plebeian market better. but as we were discussing earlier today, we are planning to be at the bitcoin conference in prague in june, and at minimum, i'll be of course keen to sip czech lager and talk shop. in the time between, if you could elaborate a specification of all the query algorithms in simple english for me, i will enhance the _graph extension to cover all bases in the data structure and if necessary, add operator syntax to give full necessary expression for them so you can move off that old but mature graph database engine. and while you are at it, make sure to specify the results structuring you want, things like sort order, and AND/OR/NOT operators. none of this is difficult for me to understand.