Complex sentence: Manufacture and use of tools in wild Sumatran orangutans "Naturwissenschaften" 83: 186--188 In the wild, mandrills have been observed to clean their ears with modified tools.
Split into simpler sentences: Manufacture and use of tools in wild Sumatran orangutans. Naturwissenschaften, 83: 186--188 In the wild, mandrills have been observed to clean their ears with modified tools.