Between late 2016 and May 2018, several U.S. and Canadian diplomats in Havana complained of health problems from an unknown cause. China and Cuba have denied any such actions. Diplomats in some postings have been plagued with nausea, headache, dizziness and other unexplained symptoms. Since 2016, the so-called Havana syndrome has afflicted more than 40 U.S. diplomats at the U.S. Embassy in the Cuban capital and at least a dozen more at the U.S. Consulate in Guangzhou, China. The State Department said in June 2018 that it had brought home diplomats from Guangzhou, China, over concern they were suffering similar symptoms.
To late 2016 and may 2018, several U.S. and Canadian diplomats in Havana tried to warn doctors from an unknown cause.
( z0 try :ARG0 ( z1 and :quant ( z2 several ) :location ( z3 city :name ( z4 name :op "Havana" ) ) :op ( z5 person :ARG0-of ( z6 have-org-role :ARG1 ( z7 country :name ( z8 name :op "U.S." ) ) :ARG2 ( z9 diplomat ) ) ) :op ( z10 person :ARG0-of ( z11 have-org-role :ARG1 ( z12 country :name ( z13 name :op "Canada" ) ) :ARG2 ( z14 diplomat ) ) ) ) :ARG1 ( z15 warn :ARG0 z1 :ARG1 ( z16 cause :ARG1-of ( z17 know :polarity - ) ) :ARG2 ( z18 doctor ) ) :time ( z19 and :op ( z20 late :op ( z21 date-entity :year 2016 ) ) :op ( z22 possible :ARG1 ( z23 date-entity :year 2018 ) ) ) )
(z0 / try-01
    :ARG0 (z1 / and
              :quant (z2 / several)
              :location (z3 / city
                            :name (z4 / name
                                      :op1 "Havana"))
              :op1 (z5 / person
                       :ARG0-of (z6 / have-org-role-91
                                    :ARG1 (z7 / country
                                              :name (z8 / name
                                                        :op1 "U.S."))
                                    :ARG2 (z9 / diplomat)))
              :op2 (z10 / person
                        :ARG0-of (z11 / have-org-role-91
                                      :ARG1 (z12 / country
                                                 :name (z13 / name
                                                            :op1 "Canada"))
                                      :ARG2 (z14 / diplomat))))
    :ARG1 (z15 / warn-01
               :ARG0 z1
               :ARG1 (z16 / cause
                          :ARG1-of (z17 / know-01
                                        :polarity -))
               :ARG2 (z18 / doctor))
    :time (z19 / and
               :op1 (z20 / late
                         :op1 (z21 / date-entity
                                   :year 2016))
               :op2 (z22 / possible-01
                         :ARG1 (z23 / date-entity
                                    :year 2018))))
To late 2016 and may 2018 , several U.S. and Canadian diplomats in Havana tried to warn doctors from an unknown cause .
z20 :op1 z21
z21 :year 1
z19 :op1 z20
z19 :op2 z22
z22 :ARG1 z23
z23 :year 2
z7 :name z8
z8 :op1 5
z1 :quant z2
z12 :name z13
z13 :op1 3
z1 :op1 z5
z5 :ARG0-of z6
z6 :ARG1 z7
z6 :ARG2 z9
z1 :op2 z10
z10 :ARG0-of z11
z11 :ARG1 z12
z11 :ARG2 z14
z1 :location z3
z3 :name z4
z4 :op1 4
z0 :ARG0 z1
z0 :time z19
z0 :ARG1 z15
z15 :ARG0 z1
z15 :ARG2 z18
z17 :polarity 0
z16 :ARG1-of z17
z15 :ARG1 z16