Four of them are from China. It dismissed any suggestion the move was politically motivated, saying the decision was purely technical. A police report of the incident was seen by Reuters. It has previously said it expects interim results of late-stage trials this year. The state government of Sao Paulo, where the trial is being run, said the death of a trial volunteer had been registered as a suicide and was being investigated.
They are going to try 4 teens in the next few days.
( z0 try :ARG0 ( z1 they ) :ARG1 ( z2 person :quant 4 :mod ( z3 teen ) ) :time ( z4 few :op ( z5 temporal-quantity :quant 1 :mod ( z6 next ) :unit ( z7 day ) ) ) )
(z0 / try-01
    :ARG0 (z1 / they)
    :ARG1 (z2 / person
              :quant 4
              :mod (z3 / teen))
    :time (z4 / few
              :op1 (z5 / temporal-quantity
                       :quant 1
                       :mod (z6 / next)
                       :unit (z7 / day))))
They are going to try 4 teens in the next few days .
z0 :ARG0 z1
z2 :quant 1
z0 :ARG1 z2
z2 :mod z3
z0 :time z4
z5 :quant 0
z4 :op1 z5
z5 :mod z6
z5 :unit z7