Sentence:  The thing is that these bees love a fine-grained soil that is moist ; yet the <WSD>water</WSD> in the ground should not be stagnant either . 
Meaning of the word marked with <WSD> tags:  binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent