<prompt> Translate the following text to EnglishHata hivyo, kupanua ufafanuzi wa uwekezaji wa NIPA kujumuisha elimu na RD itakuwa vigumu kwa sababu hakuna makubaliano juu ya nini gharama zinapaswa kujumuishwa au jinsi ya kupima kupunguzwa na mchango wa uzalishaji wa mtaji usioonekana.  <response>: Nonetheless, broadening the NIPA investment definition to include education and R and D would be difficult because there is no consensus on which expenditures should be included or how to measure the depreciation and contribution to output of intangible capital. 