I know from locally stored knowledge that:

1973
is the birthdate of
Maxi Mounds
([fact: ["137244919@trueknowledge.com"]])

is the same as or a more accurate version of
is a more general form of
is strictly equal to
([fact: ["1154455662@trueknowledge.com"]])

permanent
applies to
is the same as or a more accurate version of
([fact: ["1154274674@trueknowledge.com"]])

By calculation (generator: ["strictequal1@trueknowledge.com"]) I know that:

1973
is strictly equal to
1973

By calculation (generator: ["moregeneral4@trueknowledge.com"]) I know that:

1973
is the same as or a more accurate version of
1973

By calculation (generator: ["regex2@trueknowledge.com"]) I know that:

"1973"
is a string that contains the regular expression
"^([0-9-]+)"

"1973"
is the substring of the string and regular expression at index
"1973", "^([0-9-]+)" and 1

By calculation (generator: ["year_component@trueknowledge.com"]) I know that:

1973
is the year component of
1973

By calculation (generator: ["calendar_year@trueknowledge.com"]) I know that:

1973
is a
calendar year