How to collate the arguments features to create a set of values from an Enum?

Given an Enum object that cannot be modified, and a custom Query class that should generate a compilation of the Enum values given different arguments:

from enum import Enum

class Fields(Enum):
    a = ["hello", "world"]
    b = ["foo", "bar", "sheep"]
    c = ["what", "the"]
    d = ["vrai", "ment", "cest", "vrai"]
    e = ["foofoo"]

class Query:
    def __init__(self, a=True, b=True, c=False, d=False, e=False):
        self.query_fields = set()
        self.query_fields.update(Fields.a.value) if a else None
        self.query_fields.update(Fields.b.value) if b else None
        self.query_fields.update(Fields.c.value) if c else None
        self.query_fields.update(Fields.d.value) if d else None
        self.query_fields.update(Fields.e.value) if e else None

It's possible to get a custom set of query_fields, as such:

[out]:

>>> x = Query()
>>> x.query_fields
{'bar', 'foo', 'hello', 'sheep', 'world'}

>>> x = Query(e=True)
>>> x.query_fields
{'bar', 'foo', 'foofoo', 'hello', 'sheep', 'world'}

Question: In the Query initialization function, we had to iterate through each class argument and do something like self.query_fields.update(Fields.a.value) if a else None, are there other ways to achieve the same behavior and output of Query().query_fields without hard-coding each argument?

from How to collate the arguments features to create a set of values from an Enum?