Gray Cowan Boyce (19 February 1899 - 14 May 1981) was an American medieval historian and historical bibliographer whose masterwork was his five volume "Literature of Medieval History, 1930-1975: A Supplement to Louis John Paetow's "A Guide to the Study of Medieval History"" (1981).
Gray Boyce lived through both world wars.
Determine if the sentence is true based on the text below:
Gray Boyce lived through both world wars.

Gray Cowan Boyce (19 February 1899 - 14 May 1981) was an American medieval historian and historical bibliographer whose masterwork was his five volume "Literature of Medieval History, 1930-1975: A Supplement to Louis John Paetow's "A Guide to the Study of Medieval History"" (1981).
Options: 

 - yes

 - it is not possible to tell

 - no
yes
Determine if the sentence is true based on the text below:
Gray Boyce lived through both world wars.

Gray Cowan Boyce (19 February 1899 - 14 May 1981) was an American medieval historian and historical bibliographer whose masterwork was his five volume "Literature of Medieval History, 1930-1975: A Supplement to Louis John Paetow's "A Guide to the Study of Medieval History"" (1981).
Options: 

 - yes

 - it is not possible to tell

 - no
user
yes
assistant