July 28 (Reuters) - Seven Walmart stores in Missouri were evacuated after receiving bomb threats but no explosives were found, a Walmart spokesman said on Saturday. The threats were called in late on Friday to stores in Raytown, Gladstone, Jefferson City, Nixa, St. Peters and Ozark, spokesman Dan Fogleman said. The retailer is working with police to find those responsible, Fogleman said. No explosives were found and no injuries were reported.
Seven Walmart stores in Missouri received telephone calls warning them of bombs planted at their work place
It says in the context the seven walmarts received bomb threats, but it does not say how they received the bomb threats.  So the Statement " seven walmart stores received telephone calls warning them of bombs" is neither definitely correct, nor definitely incorrect.
( z0 receive :ARG0 ( z1 store :quant 7 :location ( z2 state :name ( z3 name :op "Missouri" ) ) :mod ( z4 company :name ( z5 name :op "Walmart" ) ) ) :ARG1 ( z6 call :ARG0-of ( z7 warn :ARG1 ( z8 bomb :ARG1-of ( z9 plant :ARG2 ( z10 place :location-of ( z11 work ) :poss z1 ) ) ) :ARG2 z1 ) :medium ( z12 telephone ) ) )
(z0 / receive-01
    :ARG0 (z1 / store
              :quant 7
              :location (z2 / state
                            :name (z3 / name
                                      :op1 "Missouri"))
              :mod (z4 / company
                       :name (z5 / name
                                 :op1 "Walmart")))
    :ARG1 (z6 / call-02
              :ARG0-of (z7 / warn-01
                           :ARG1 (z8 / bomb
                                     :ARG1-of (z9 / plant-01
                                                  :ARG2 (z10 / place
                                                             :location-of (z11 / work-01)
                                                             :poss z1)))
                           :ARG2 z1)
              :medium (z12 / telephone)))
Seven Walmart stores in Missouri received telephone calls warning them of bombs planted at their work place
z4 :name z5
z5 :op1 2
z1 :mod z4
z1 :quant 0
z1 :location z2
z2 :name z3
z3 :op1 1
z0 :ARG0 z1
z6 :medium z12
z0 :ARG1 z6
z6 :ARG0-of z7
z7 :ARG2 z1
z7 :ARG1 z8
z8 :ARG1-of z9
z10 :location-of z11
z9 :ARG2 z10
z10 :poss z1