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

The current time is July 30th 2014, 15:13:25

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

barrel
is the second parameter of
24,700 barrels

I know from locally stored knowledge that:

Fact 1:
42
is the multiplier that converts
barrel and US gallon
([fact: ["127580077@trueknowledge.com"]])

Fact 1
is true for
October 8th 2009, 20:39:59 onwards
([fact: ["643458720@trueknowledge.com"]])

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

Fact 1
is true at
July 30th 2014, 15:13:25

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

24,700
is the first parameter of
24,700 barrels

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

1,037,400
is the product of
42 and 24,700

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

volume
is the class of the parametered object
24,700 barrels

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

1,037,400 US gallons
is the parametered object corresponding to
volume and 1,037,400 and US gallon

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

Fact 2:
1,037,400 US gallons
is equivalent to
24,700 barrels

Fact 2
is true at
July 30th 2014, 15:13:25

Fact 2:
US gallon
is the unit used in
1,037,400 US gallons