[Python] Check if substring is in tuple of strings

Which is the most elegant way to check if there is an occurrence of several substrings in a tuple of strings?

string_tuple = ('first-answer', 'second-answer', 'third-answer')
substr1 = 'first'
substr2 = 'second'
substr3 = 'third'

# PSEUDOCODE:
# if substr1 in string_tuple and \
# substr2 in string_tuple and \
# substr3 in string_tuple:
# SHOULD return True

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