Assertion: marine diatom | /r/HasProperty | collected by direct water sampling
Facets:
Source sentences:
text: Marine diatoms can be collected by direct water sampling, and benthic forms can be secured by scraping barnacles, oyster and other shells.
text: Marine diatoms can be collected by direct water sampling, though benthic forms can be secured by scraping barnacles, oyster shells, and other shells.