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.
Take context from the input text and decide on the accurate relationship between 'Pipistrel' and 'Ivo Boscarol' from the options provided.
Options: chief executive officer, business division, currency, location of formation