Assertion: dog | /r/HasProperty | belka
Facets:
Source sentences:
text: After Laika, the Soviet Union sent two more dogs, Belka and Strelka, into space on Aug. 19, 1960.
text: On 19 August 1960 the Soviet Union launched Sputnik 5 (also known as Korabl-Sputnik 2) which carried the dogs Belka and Strelka, along with a gray rabbit, 40 mice, 2 rats, and 15 flasks of fruit flies and plants.