@Q:
LET edgeKeys = (FOR v, e IN <span class="hljs-number">1.</span><span class="hljs-number">.1</span> ANY <span class="hljs-string">'germanCity/Berlin'</span> GRAPH <span class="hljs-string">'routeplanner'</span> RETURN e._key)
LET r = (FOR key IN edgeKeys REMOVE key IN internationalHighway
      OPTIONS { <span class="hljs-attr">ignoreErrors</span>: <span class="hljs-literal">true</span> } REMOVE key IN germanHighway
      OPTIONS { <span class="hljs-attr">ignoreErrors</span>: <span class="hljs-literal">true</span> } REMOVE key IN frenchHighway
      OPTIONS { <span class="hljs-attr">ignoreErrors</span>: <span class="hljs-literal">true</span> }) 
REMOVE <span class="hljs-string">'Berlin'</span> IN germanCity

@R
[]