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

The current time is April 16th 2014, 16:06:48

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

Knot
is the second parameter of
650 knots

I know from locally stored knowledge that:

Fact 1:
1.151
is the multiplier that converts
Knot and miles per hour
([fact: ["797396600@trueknowledge.com"]])

Fact 1
is true for
December 6th 2010, 14:14:54 onwards
([fact: ["1050373946@trueknowledge.com"]])

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

Fact 1
is true at
April 16th 2014, 16:06:48

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

650
is the first parameter of
650 knots

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

748.15
is the product of
1.151 and 650

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

speed
is the class of the parametered object
650 knots

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

748.15 miles per hour
is the parametered object corresponding to
speed and 748.15 and miles per hour

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

Fact 2:
748.15 miles per hour
is equivalent to
650 knots

Fact 2
is true at
April 16th 2014, 16:06:48

Fact 2:
miles per hour
is the unit used in
748.15 miles per hour