Assertion: monkey's presence | /r/HasProperty | until recent times[when
Facets:
Source sentences:
text: Until recent times[when?], the presence of same-sex sexual behavior was not "officially" observed on a large scale, possibly due to observer bias caused by social attitudes to same-sex sexual behavior, innocent confusion, lack of interest, distaste, scientists fearing loss of their grants or even from a fear of "being ridiculed by their colleagues".