rule Person2Student{
from 
	person : PersonMM!Person(person.age < 26)
to
	student : StudentMM!Student(
		name <- person.name --attribute
                has_adress <-person.has_adress -- reference  Person ----- 1..* : has_adress ----> Home 
        )
}
rule Home2Adress{){
from 
	home : PersonMM!Home 
to
	adress : StudentMM!Adress(
		adress <- home.adress
	)
}