Some of the emails had the subject line, "Think Twice." They were sent from a spoofed email address. The sender claimed to have had an associate plant a small bomb in the recipient's building and said the only way to stop him from setting it off was by making an online payment of $20,000 in bitcoin.
The sender claimed there was only one way to stop the bomb from exploding
( z1 claim :ARG0 ( z2 person :ARG0-of ( z3 send ) ) :ARG1 ( z4 way :quant 1 :manner-of ( z5 stop :ARG1 ( z6 bomb ) :ARG2 ( z7 explode :ARG1 z6 ) ) :mod ( z8 only ) ) )