Assertion: light bulb | /r/HasProperty | the first
Facets:
Source sentences:
text: Although the incandescent lamp was the first and certainly the least expensive type of light bulb, there are a host of other light bulbs that serve myriad uses:
text: Although the incandescent lamp was the first and certainly the least expensive type of light bulb, there are a host of other light bulbs that serve myriad uses: