'org.drools:drools-core:5.2.0.M1'
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-core</artifactId>
<version>5.2.0.M1</version>
</dependency>
<dependency org="org.drools" name="drools-core" rev="5.2.0.M1"/>
"org.drools", "drools-core", "5.2.0.M1"