[Bioperl-l] GO path and GO relationships

[Law, Annie]

Hi,

I would like to know if there are modules in bioperl that will help me find
the go path, hierarchy corresponding to An input GO id. Also, I would like
to know if there is something in bioperl if given as input a group of GO
identifiers will indicate the 
Relationship between the GO identifiers ie. Parent or child of or is a.

I am open to using resources available in bioperl db or separate modules.

Thanks very much,
Annie.