Assertion: magnetic field | /r/CapableOf | provide basis
Facets:
value: for navigation
type: PURPOSE
Source sentences:
text: Created by the churn of Earth's core, this field is important for everyday life: It shields the planet from solar particles, it provides a basis for navigation and it might have played an important role in the evolution of life on Earth.
text: Created by the churn of Earth's core, this field is important for everyday life: It shields the planet from solar particles, it provides a basis for navigation and it might have played an important role in the evolution of life on Earth.