It was known to be a favorite ride for both Frank Sinatra and James Brown. Dean Martin and Frank Sinatra outside of Sinatra's Learjet in the mid-60s. However, it became especially iconic in the age of 1960s celebrities Sinatra, Marlon Brando, and Dean Martin. Dean Martin was said to be a regular passenger on Sinatra's jet, and it was also used to fly Sammy Davis Jr and Marlon Brando to Mississippi to join Martin Luther King Jr on a freedom march. Sinatra also famously let Elvis Presley borrow his Learjet to elope with Priscilla Beaulieu in 1967.
The sixty's were probably people.
( z0 person :domain ( z1 person :age ( z2 temporal-quantity :quant 60 ) ) :mod ( z3 probable ) )
(z0 / person
    :domain (z1 / person
                :age (z2 / temporal-quantity
                         :quant 60))
    :mod (z3 / probable))
The sixty 's were probably people .
z1 :age z2
z2 :quant 0
z0 :mod z3
z0 :domain z1