Assertion: zoologist's research | /r/HasProperty | done by e. g. bekker
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Source sentences:
text: General research in the taxonomy, paleontology, phylogeny, and metamorphosis of insects has been done by N. A. Kholodkovskii, B. B. Rodendorf, N. M. Kulagin, I. I. Ezhikov, E. G. Bekker, V. V. Alpatov, B. N. Shvanvich, A. V. Martynov, and E. S. Smirnov.