I know from locally stored knowledge that:

42°22'30"N
is the latitude of
Cambridge
([fact: ["15466684@trueknowledge.com"]])

40°26'26"N
is the latitude of
Pittsburgh, Pennsylvania
([fact: ["9134987@trueknowledge.com"]])

71°06'38"W
is the longitude of
Cambridge
([fact: ["359804799@trueknowledge.com"]])

79°59'45"W
is the longitude of
Pittsburgh, Pennsylvania
([fact: ["161120797@trueknowledge.com"]])

By calculation (generator: ["distance_between3@trueknowledge.com"]) I know that:

770.75169634 kilometers
is the distance between
Cambridge and Pittsburgh, Pennsylvania

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

kilometer
is the second parameter of
770.75169634 kilometers

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

The current time is April 19th 2014, 17:09:47

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

770.75169634
is the first parameter of
770.75169634 kilometers

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

478.924090832267
is the product of
0.621372736649807 and 770.75169634

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

length
is the class of the parametered object
770.75169634 kilometers

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

478.924090832267 miles
is the parametered object corresponding to
length and 478.924090832267 and mile

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

Fact 1:
478.924090832267 miles
is equivalent to
770.75169634 kilometers

Fact 1
is true at
April 19th 2014, 17:09:47

Fact 1:
mile
is the unit used in
478.924090832267 miles