input: Two-stroke oil

Unlike a four-stroke engine, whose crankcase is closed except for its ventilation system, a two-stroke engine uses the crankcase as part of the induction tract, and therefore, oil must be mixed with gasoline to be distributed throughout the engine for lubrication. The resultant mix is referred to as petroil. This oil is ultimately burned along with the fuel as a total-loss oiling system. This results in increased exhaust emissions, sometimes with excess smoke and/or a distinctive odor.
is there a difference in 2 stroke oil
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output: yes

input: Holby City

Holby City was created by Tony McHale and Mal Young as a spin-off from the BBC medical drama Casualty, which is set in the emergency department of the fictional Holby City Hospital. Young wanted to explore what happened to patients treated in Casualty once they were taken away to the hospital's surgical wards. While Casualty's scope is limited to ''accident of the week'' storylines about patients entering hospital, Holby City allowed the possibility of storylines about long-term care, rather than immediate life and death decisions. The series was commissioned by BBC One Controller Peter Salmon, and began airing on BBC One on 12 January 1999.
are holby city and casualty set in the same hospital
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output: yes

input: Real estate contract

As may be the case with other contracts, real estate contracts may be formed by one party making an offer and another party accepting the offer. To be enforceable, the offers and acceptances must be in writing (Statute of Frauds, Common Law)and signed by the parties agreeing to the contract. Often, the party making the offer prepares a written real estate contract, signs it, and transmits it to the other party who would accept the offer by signing the contract. As with all other types of legal offers, the other party may accept the offer, reject it (in which case the offer is terminated), make a counteroffer (in which case the original offer is terminated), or not respond to the offer (in which case the offer terminates by the expiration date in it). Before the offer (or counteroffer) is accepted, the offering (or countering) party can withdraw it. A counteroffer may be countered with yet another offer, and a counteroffering process may go on indefinitely between the parties.
the sale of real estate is covered by the common law of contracts
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output: yes

input: List of surviving de Havilland Mosquitos

The de Havilland Mosquito is a British two-engine multi-role combat aircraft used by the Royal Air Force and other Allied air forces during World War II. Of the 7,781 planes built, 30 survive today, three of which are airworthy.
are there any de havilland mosquitoes still flying
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output:
yes