Assertion: abundant krill | /r/CapableOf | become by major naval powers
Facets:
value: during the cold war
type: TEMPORAL
Source sentences:
text: To give some idea of how abundant krill are, they became a major topic of study by the major naval powers during the Cold War because the tremendous noise made by shoals of these minute animals is so great that they can form a biological barrier against sonar under which submarines can hide.