Assertion: past tense | /r/ObjectUse | used for earlier research efforts
Facets:
value: by own
type: OTHER
value: by another group
type: OTHER
Source sentences:
text: Introduction: use a mixture of present and past tense; the present tense is applied when you are talking about something that is always true; the past tense is used for earlier research efforts, either by your own or by another group.