The Nova Orchestra package contains two examples of BPEL processes:
loanApproval : invokes two local web services. This example is taken from the BPEL 2.0 standard.
weather: invokes a remote Web Service and returns the current weather.
A build.xml file is provided for each of those samples. Those ant scripts provide the same targets to deploy, launch and undeploy the sample. Go to the desired example and use the command lines :
>ant deploy
>ant launch
>ant undeploy