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

The current time is April 21st 2014, 16:08:55

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

acre
is the second parameter of
2.59 acres

I know from locally stored knowledge that:

Fact 1:
43,560
is the multiplier that converts
acre and square foot
([fact: ["644332720@trueknowledge.com"]])

Fact 1
is true for
all time
([fact: ["1050413370@trueknowledge.com"]])

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

Fact 1
is true at
April 21st 2014, 16:08:55

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

2.59
is the first parameter of
2.59 acres

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

112,820.4
is the product of
43,560 and 2.59

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

area
is the class of the parametered object
2.59 acres

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

112,820.4 square feet
is the parametered object corresponding to
area and 112,820.4 and square foot

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

Fact 2:
112,820.4 square feet
is equivalent to
2.59 acres

Fact 2
is true at
April 21st 2014, 16:08:55

Fact 2:
square foot
is the unit used in
112,820.4 square feet