Adding further intrigue, Slovenian entrepreneur Ivo Boscarol said his own attempt to cross the Channel in a Pipistrel electric plane even earlier in the week was thwarted when Germany's Siemens abruptly took away its engine, saying it was not certified over water.
Analyze the relationship between 'Pipistrel' and 'Ivo Boscarol' within the context of the input sentence.
Options: chief executive officer, currency, business division, location of formation