8
Person1
NOT PRESENT
Person2
PRESENT
Person4
PRESENT
Person5
NOT PRESENT
Person7
PRESENT
Person9
NOT PRESENT
Person10
PRESENT
Person12
NOT PRESENT
5
Person0:Person1,Person2
Person3:Person4,Person5
Person6:Person7,Person3
Person8:Person9,Person10
Person11:Person12,Person1