81.   He has a theory on why the tributes are finding popularity today.

82.   He has a theory about this.

83.   He has always exhibited a proclivity for the dramatic, and his parents, Doug and Betsy Nixon, have a theory.

84.   He has several theories for what he calls the steady growth in the market.

85.   He has his theories on why tempers are up.

86.   He has a theory.

87.   He, too, has a theory about the new Stickleyism.

88.   His daughter, Grace Guggenheim, has a theory as to why.

89.   Historians have a theory about why the strips are so popular.

90.   Hospital spokeswoman Patty Riddlebarger said she did not know if doctors had a theory as to what may have happened.