Question: Both Arthur T. Gregorian and Robert Nalbandyan belongs to which national?
Sentence (from "Robert Nalbandyan"): Robert Nalbandyan (1937–2002) was an Armenian chemist, the co-discoverer of photosynthetic protein plantacyanin, a pioneer in the field of free radicals, and a noted and prolific writer on various subjects in the field of chemistry.
Relevant evidence: Yes