':param text: a string (optionally tokenized) containing a comparation.
:param comp_type: an integer defining the type of comparison expressed.
Values can be: 1 (Non-equal gradable), 2 (Equative), 3 (Superlative),
4 (Non-gradable).
:param entity_1: the first entity considered in the comparison relation.
:param entity_2: the second entity considered in the comparison relation.
:param feature: the feature considered in the comparison relation.
:param keyword: the word or phrase which is used for that comparative relation.'

def __init__(self, text=None, comp_type=None, entity_1=None, entity_2=None, feature=None, keyword=None):

    self.text = text
    self.comp_type = comp_type
    self.entity_1 = entity_1
    self.entity_2 = entity_2
    self.feature = feature
    self.keyword = keyword
