Sentence:  <WSD>Empiricism</WSD> is the doctrine that human knowledge is grounded on the "kind" of experience, mostly achieved through the five senses, whose objects are particular events occurring at particular times and in particular places. 
Meaning of the word marked with <WSD> tags:  A doctrine which holds that the only or, at least, the most reliable source of human knowledge is experience, especially perception by means of the physical senses. (Often contrasted with rationalism.)<ref>"Dictionary of Philosophy", Dagobert D. Runes (ed.), Philosophical Library, 1962. "See:" "Empiricism" by Morris T. Keeton, p. 89 which explains 9 philosophical senses of "empiricism."</ref><ref>"The Encyclopedia of Philosophy", Paul Edwards (ed.), Macmillan, 1967. "See:" "Empiricism" by D. W. Hamlyn, vol. 2, pp. 499-505.</ref>