Explain in your own words the interactions illustrated by this Sequence Diagram:

Consider the code below:

class Person {
    Tag tag;
    String name;

    Person(String personName, String tagName) {
        name = personName;
        tag = new Tag(tagName);
    }
}

class Tag {
    Tag(String value) {
        // ...
    }
}

class PersonList {
    void addPerson(Person p) {
        // ...
    }
}

Draw a sequence diagram to illustrate the object interactions that happen in the code snippet below:

PersonList personList = new PersonList();
while (hasRoom) {
    Person p = new Person("Adam", "friend");
    personList.addPerson(p);
}

Find notation mistakes in the sequence diagram below: