Assertion: ornithologist | /r/CapableOf | know extreme case
Facets:
Source sentences:
text: In order to be able to carry out studies on birds, their practical characteristics, anatomy, habitats and to classify them in general, the ornithologist must take into account that he will do it more easily and quickly if he has binoculars, knows the place of study, or An extreme case, if you have a guide or map.