question: What can be used to navigate oceans?
choices.text: spacecraft magnets navigation altimeters sun dials calibrated wind boats
choices.label: A B C D E F G H
fact2: Magnets are used in compasses.
combinedfact: Magnets are used to navigate oceans
formatted_question: What can be used to navigate oceans? (A) spacecraft (B) magnets (C) navigation (D) altimeters (E) sun dials (F) calibrated (G) wind (H) boats