Assertion: magnetic field's pole | /r/CapableOf | accelerate to 40 km per year
Facets:
Source sentences:
text: The pole kept going during the 20th century, north at an average speed of 10 km per year, lately accelerating "to 40 km per year," says Newitt.
text: The pole kept going during the 20th century, north at an average speed of 10 km per year, lately accelerating "to 40 km per year," says Newitt.
text: The pole kept going during the 20th century, north at an average speed of 10 km per year, lately accelerating to 40 km per year.