input question: Governor Gray Davis estimated yesterday that the fires could cost nearly $ 2 billion .
State officials estimated the cost at nearly $ 2 billion .
output answer: yes

input question: A Trillian representative did not return an e-mail requesting comment .
The representative did not return calls seeking additional comment .
output answer: yes

input question: In 1975 he married Marta Casals , the widow of Pablo Casals .
Istomin later married Casals ' widow , Marta , after Casals ' death in 1973 .
output answer: no

input question: Arguing that the case was an isolated example , Canada has threatened a trade backlash if Tokyo 's ban is not justified on scientific grounds .
Canada which is a major meat exporter to Japan , has threatened a trade backlash if Tokyo 's ban is not justified on scientific grounds .
output answer:
no