For each of these scenarios, draw an ER model using any standard notation, clearly denoting maximum and minimum cardinality constraints. Write the one liner and four sentences for each diagram (statements that specify degree and mandatoriness of each entity, if applicable). Number of tables needed and the columns in the tables especially Primary and Foreign Key postings must be complete.

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A dissertation committee has exactly one chairperson and two other members, and the same committee can supervise the dissertation of many doctoral students, typically not more than five. A student must have exactly one committee supervising his/her dissertation and a committee must have at least one student. A dissertation committee has a start date and is dissolved when the last student has graduated and the committee has no more students.