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

The current time is July 30th 2014, 23:19:47

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

hectare
is the second parameter of
52 hectares

I know from locally stored knowledge that:

Fact 1:
10,000
is the multiplier that converts
hectare and square metre
([fact: ["127561840@trueknowledge.com"]])

Fact 1
is true for
all time
([fact: ["1050410802@trueknowledge.com"]])

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

Fact 1
is true at
July 30th 2014, 23:19:47

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

52
is the first parameter of
52 hectares

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

520,000
is the product of
10,000 and 52

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

area
is the class of the parametered object
52 hectares

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

520,000 square metres
is the parametered object corresponding to
area and 520,000 and square metre

By calculation (generator: ["equivalent_to6@trueknowledge.com"]) I know that:

Fact 2:
520,000 square metres
is equivalent to
52 hectares

Fact 2
is true at
July 30th 2014, 23:19:47

Fact 2:
square metre
is the unit used in
520,000 square metres