Assertion: hydrogen bomb | /r/HasProperty | difficult to make
Facets:
value: much more
type: DEGREE
Source sentences:
text: A fusion bomb is more sophisticated and difficult to make, since it requires a much higher temperature -- in the order of millions of degrees centigrade.
text: H-bombs are much more difficult to make than atomic bombs.
text: A fusion bomb is more difficult to make because it requires a temperature of millions of degrees centigrade, which is produced by a primary fission reaction.