沙
=
少
+
氵
:
Sherlock Holmes (sh) is selling bottles (氵) in front of the ashram (a1). Smiley (少) comes round because thon is very thirsty and buys a bottle, just to find out that it contains only sand (沙).
井
=
二
+
丿
+
丨
:
Joan of Arc (ji) is digging a well (井) inside the engine ((e)ng3). At first she was doing it by hand, but then she hooked up a capacitor (二) to a banana (丿) and a dinosaur bone (丨), which dig for her using the electrical energy.