Domesticated wild card

Say I'm going to write an article about inventors and want to do some background research to see how others have described them, what studies show about them, etc. I go to an Internet search engine like Google and type "Inventors ~are *" The ~ in front of the "are" will give me synonyms for the word "are." The wild card of "*" will give me ALL parts of speech following the phrase "inventors are." But I only want adjectives like fat, stupid, lazy, hot, etc. I don't want prepositions, conjunctions, or pronouns. I want to be able to hunt for adjectives only with a search like "inventors are *adjective" where *adjective better defines the wild card I seek. I could also search for *noun, *verb and so on. The search engine would have to look to a list of words for various parts of speech such as (1). Edit 2013-08-24: the Asterisk could also be placed in the front of a number -- *number, or symbol -- *@ in order to search for these specific items.