Sentence:  That flurry of activity had been set off by a magisterial book (Whyte, 1957), reinforced by Dinsdale's filming of a <WSD>Nessie</WSD> (Dinsdale, 1961) and culminating in successful underwater photography (Rines et al., 1976) by the Academy of Applied Science (AAS). <WSD>Nessies</WSD> were assigned the taxonomic identity "Nessiteras rhombopteryx" (Anonymous, 1975). 
Meaning of the word marked with <WSD> tags:  The Loch Ness monster.