new_contents: from sqlalchemy.ext.declarative import declarative_base
  from sqlalchemy import Column, Integer, String
  
  Model = declarative_base()
  
  class Probability(Model):
      __tablename__ = 'probability'
      field = Column(String)
      description = Column(String)
      total_occurences = Column(Integer)
      spam_occurences = Column(Integer)
      __table_args__ = (UniqueConstraint('field', 'description'),)
  
  # class UserAgents(Model):
  #     __tablename__ = 'useragents'
  #     # TODO: find all the fields in a user agent to do clustering
  #     field = Column(Integer)
  
subject: Add db models to represent occurence spam messages