Assertion: positron | /r/AtLocation | matter
Facets:
value: for a short time
type: TEMPORAL
Source sentences:
text: The positron is stable, but it exists in matter for only a short time because it undergoes annihilation with electrons.
text: The positron is stable, but it exists in matter for only a short time because it undergoes annihilation with electrons.
text: The positron is stable, but it exists in matter for only a short time because it undergoes annihilation with electrons.
text: The positron is stable, but it exists in matter for only a short time because it undergoes annihilation with electrons.