Using Clause

The using clause specifies one or more event types to subscribe to in the pattern, and an alias for each. One says that the pattern subscribes to these events.

Use and to separate each event type.

using /Ontology/EventA as a and /Ontology/EventB as b
using "/My Ontology/My Patterns/EventA" as a
   and "/My Ontology/My Patterns/EventB" as b